The Long Arc: Middle Age, Old Age, and the Last Decision

There is no single right way to do this. There is only paying attention — to what the research has learned in the last decade, and to the specific dog in front of you.

When Middle Age Actually Starts

The old rule of seven was always a rough guess, and it was wrong in two specific ways. First, it implied linearity — as if aging proceeded at the same rate across a dog’s life the way it roughly does across an adult human’s. Second, the number was arbitrary. Nobody cited data for it because there was no data.

Wang and colleagues set out to fix the arbitrary part. They sampled blood from 104 Labrador Retrievers ranging from eight weeks to sixteen years old and profiled DNA methylation across the genome. They did the same for 320 humans from one year to 103. They then asked where, in methylation space, the two species aligned. The answer was not a straight line. The answer was a logarithm. Specifically: human equivalent age = 16 × ln(dog age) + 31. A one-year-old dog maps to thirty-one. A two-year-old to forty-two. A four-year-old to fifty-three. A seven-year-old to sixty-two. A fourteen-year-old to seventy-three. After the rapid aging of the first year, the rate slows dramatically and keeps slowing.

The calculator below lets you walk through the curve for your own dog. The green line is the Wang formula. The dashed red line is the old seven-times-age myth, included so you can see the gap between what people said and what the biology actually shows.

Two things worth noticing about this curve. The first is that middle age for a Lagotto starts sooner than most families think. At seven, the dog is in her early sixties in human-equivalent years — an age at which a human being would be sensibly scheduling twice-yearly medical check-ups, tracking subtle changes, and thinking about preventative care. The same is true for your dog. The Canine Cognitive Dysfunction Syndrome Working Group, in its 2025 guidelines published in the Journal of the American Veterinary Medical Association (Olby et al.), recommends beginning annual behavioural screening at age seven precisely because this is when the subtle shifts start — and when they are easiest to miss.

The second thing is that the flattening of the curve is genuinely good news. A thirteen-year-old Lagotto has not lived the equivalent of ninety-one human years. She has lived the equivalent of somewhere in her early seventies. She may have several more years of reasonable health and activity in her — especially if middle age was managed well. Which brings us to the breed itself.

The Long-Lived Breed You Signed Up For

When Mark’s first Lagotto, Mocha, was placed retired at twelve, she had been through every stage covered in this essay and was about to settle into a slower and gentler chapter with friends in Lynden. She was in her late sixties in Wang terms, and the most striking thing was how ordinary her age seemed for the breed. The Lagotto Romagnolo Club of America gives an expected lifespan of fifteen to seventeen years. That range is confirmed across the Italian, British, and North American breed records. Individual dogs have lived longer; a small minority die sooner; but the central tendency is clear.

For a medium-sized working breed, this is an unusually good result. Carolin Kraus, Sébastien Pavard, and Daniel Promislow documented the size-lifespan tradeoff in dogs in a 2013 paper in The American Naturalist. Across breeds, adult body weight is one of the strongest predictors of longevity, and the direction is counter-intuitive: larger dogs die younger. Great Danes live seven or eight years. Newfoundlands ten. Labrador Retrievers eleven or twelve. The Lagotto, at fourteen to eighteen kilograms of adult weight, sits on a favourable part of the curve.

What the long lifespan actually means, for the family living it, is that the arc from puppy to senior dog to end-of-life runs roughly the length of a child’s progression from kindergarten to university graduation. Sixteen years is a long time. Two presidential terms plus change. Long enough that a Lagotto placed with a couple in their thirties will still be with them on the other side of a midlife. Long enough to outlast jobs, houses, and a remarkable number of human relationships. The emotional arithmetic is not the same as the emotional arithmetic of an eight-year-old Great Dane. Families come to the senior years of a Lagotto having had much more time together. That is both a gift and — when the ending comes — a deeper wound.

This is the frame for everything that follows. The goal across the arc is not to postpone the ending. It is to make the middle as long and as good as it can be, and to make the ending as dignified as the life that preceded it.

Middle Age (7–9): What Shifts When Nothing Looks Wrong Yet

At seven, a Lagotto looks approximately the same as she did at five. She is not visibly grey. She still moves well. She still wants her walks. She still works a scent with the intensity that makes the breed what it is. If you are not paying attention to the calendar, there is nothing to alert you that anything has changed. And yet the biology is shifting in ways that the peer-reviewed veterinary literature has now documented well.

Two things matter about middle age. First, this is the stage at which baselines should be established — because a baseline taken now is what will tell you, three years from now, whether a change is real or imagined. Second, middle age is when the frequency of veterinary contact should increase, not because anything is wrong yet, but because the diseases of later life are easiest to intervene on when caught early. The 2025 CCDS Working Group guidelines, published in the JAVMA, recommend that annual behavioural screening begin at age seven, and that twice-yearly wellness examinations begin at the same age. Salvin and colleagues, in a 2010 Veterinary Journal paper, documented that canine cognitive dysfunction is dramatically under-diagnosed — in their cohort of older companion dogs with clinically identifiable CCDS, only 13% had received the diagnosis. The missing component is not medical knowledge. It is active screening. It is looking for the problem before the problem becomes unmissable.

A Lagotto in middle age should not be getting less exercise than she was in her prime. The Dog Aging Project data are robust on this point: physical and cognitive activity across the life course are among the strongest predictors of how a dog ages. A seven-year-old who starts sitting on the couch instead of going for the walk is not conserving energy wisely. She is stepping onto the slope that the DAP cohort shows leads to a six-fold increase in the odds of cognitive dysfunction in the senior years. Keep moving. Keep thinking. The habits of middle age are what produce the quality of the senior years.

The stage guide below is the same component used in the exercise essay, adapted here for the three senior stages. Each tab walks through what to screen for, what to prioritise, and what is worth a conversation with your vet.

The language of the stage guide is clinical on purpose. The senior years need a framework precisely because the changes are gradual, variable, and easy to dismiss. A framework does not replace the relationship with your vet; it supplements it. What follows is the diagnostic apparatus that the research has settled on — an acronym, and behind the acronym, a list of the small shifts that, taken together, tell a clearer story than any one of them could alone.

Senior (10–12): When the Shifts Become Visible

At ten, something has usually changed. It is almost never dramatic. It is almost always deniable in isolation. The dog greets visitors slightly less enthusiastically. She stands at the wrong side of the door and waits, for a few seconds, before she remembers which side opens. She sleeps more in the afternoon and is restless at two in the morning. She walks past her food once before deciding to eat. These are not emergencies. They are, in the terminology of the 2025 CCDS Working Group, mild or low-frequency presentations of a syndrome that is now well-characterised, common, and meaningfully responsive to early intervention.

Canine Cognitive Dysfunction Syndrome — CCDS — is the canine analogue of human dementia. It is a chronic, progressive, age-associated neurodegenerative syndrome. The prevalence rises sharply with age, and the literature consistently finds that it is substantially under-diagnosed. Salvin and colleagues (2010) reported 14.2% prevalence in dogs over eight using a validated questionnaire, with only 13% of those affected dogs formally diagnosed. Later work has put the prevalence higher in some cohorts — depending on breed, age distribution, and screening tool, studies report rates between 14% and 68%. The variability is itself informative: CCDS is extremely common, and how often it gets identified depends heavily on whether anyone is looking.

The neuropathology is unmistakable and closely parallels human Alzheimer’s disease. Affected brains show cortical atrophy, ventricular widening, beta-amyloid plaque deposition, and neuronal loss, though tau pathology — a defining feature of human Alzheimer’s — is usually absent in the canine form. The clinical expression of these changes is behavioural, and the framework for recognising them is the one that follows.

DISHAA: A Framework for What You’re Noticing

DISHAA is an acronym originally developed by Gary Landsberg and colleagues and now codified in the 2025 Working Group guidelines. Each letter names a behavioural domain. The usefulness of the framework is that it turns a vague sense that “something is different with her lately” into a concrete set of specific observations your vet can work with. The six cards below unpack each domain. Tap a card to see what normal aging looks like alongside what is worth bringing to a veterinary conversation.

Two clarifications about the framework. First, the Working Group is explicit that the trajectory of scores over time is more informative than any single snapshot. A dog scoring two affected domains this year and four next year is telling a clearer story than a dog whose single high-score visit might reflect a bad day. This is why periodic screening, rather than one-time assessment, is the clinical recommendation.

Second, a substantial proportion of the behaviours on the Worth-a-Vet-Call side of these cards have non-cognitive causes. House soiling in a twelve-year-old can be a urinary tract infection. Activity loss can be osteoarthritis. New anxiety can be declining hearing or vision. The DISHAA screen does not tell you which of these is the cause. It tells you that a cause exists and is worth investigating. Which leads naturally to the next section.

Normal Aging vs. Worth a Vet Call

Most of the confusable cases come down to a question of pattern. Is the change gradual, symmetric, mild, and consistent with what this specific dog has been doing across middle age? Or is it sudden, asymmetric, pronounced, or a reversal of something that was previously stable? The cards below cover the ten cases most families ask about. Tap any card to see the verdict.

Pain You Will Miss If You’re Not Looking For It

The largest missable cause of senior decline in dogs is not cognition. It is pain — specifically, the pain of osteoarthritis, and the systemic effect it has on everything else. The VetCompass UK cohort of more than 450,000 dogs (Anderson, O’Neill, and colleagues, 2018) documented an annual period prevalence of 2.5% for clinically diagnosed OA. When researchers screen actively with validated tools, the prevalence in dogs over eight is far higher — some estimates exceed 25%. The discrepancy is the same as with CCDS: it is not that OA is rare. It is that most cases are never diagnosed.

Dogs do not vocalise chronic pain. The cultural myth that a painful dog will whimper or limp obviously is one of the main reasons OA goes under-diagnosed. What a painful senior Lagotto actually does is this: she stops doing the things that hurt. She stops jumping onto the bed. She stops coming upstairs to sleep. She chooses shorter walks. She takes longer to rise after a nap. She changes how she lies down and adopts pressure-relieving positions. She may become irritable around handling in a specific area. These are all pain behaviours. None of them looks like the storybook version of a dog in pain, which is why the literature is so consistent about their being missed.

The COAST Development Group — a consortium of nine international veterinary specialists in orthopedics, anesthesia, and pain — published updated consensus guidelines for canine OA treatment in 2023 in Frontiers in Veterinary Science. The headline is that management has moved on substantially from where it was even a decade ago, and many of the treatments available now were not available for a dog who aged through her senior years in 2010.

What modern OA management actually looks like

The foundation has not changed: lean body condition, environmental modification, and appropriate exercise. Mille and colleagues in 2022 formalised what experienced rehabilitation vets had been doing for years with the “physiotherapy pyramid” — a four-tier framework that starts at the base with environmental modification (runners on slippery floors, ramps, orthopedic bedding) and builds up through owner-applied home exercises, formal physiotherapy exercises, and specialist-applied modalities like underwater treadmill and shockwave. Weight is the biggest single lever. An overweight senior Lagotto carries pain that a lean senior Lagotto does not.

Pharmacologically, the major change is the arrival of anti-nerve-growth-factor monoclonal antibody therapy. Bedinvetmab, marketed as Librela, received licensure in the EU in 2020 and in the US more recently. The drug is a once-monthly subcutaneous injection that blocks nerve growth factor — a key mediator in chronic pain signaling — and the randomised controlled trials (Enomoto and colleagues 2019, Krautmann and colleagues 2021, Corral and colleagues 2021) have shown it to be genuinely effective for moderate to severe OA pain. It is particularly useful for dogs who cannot tolerate NSAIDs because of kidney or liver concerns, which is a substantial proportion of senior dogs. Traditional NSAIDs — carprofen, meloxicam, firocoxib, grapiprant — remain the first-line therapy for most dogs who can safely receive them. Tramadol, once widely prescribed, has been largely superseded by other agents after the Budsberg 2018 study showed no meaningful improvement on placebo. Gabapentin and amantadine play adjunctive roles for neuropathic pain components.

The practical point, for the family living with a slowing senior dog, is that the menu of options is longer than it used to be. “She is just getting old” was never an acceptable treatment plan, and today it is an actively inadequate one. A vet conversation that names the specific functional changes you are seeing — cannot jump into the car, shorter walks, reluctance on stairs, stiffness after rest — is a conversation that has a productive next step. Do not wait for the limp. The literature is clear that waiting costs quality of life that was available.

Geriatric (13+): The Quiet Years

A thirteen-year-old Lagotto is a dog in her early seventies in Wang-equivalent years. The shape of her days has changed. She sleeps more. She moves less. She watches the house with a different kind of attentiveness. She is still herself — a Lagotto remains a Lagotto all the way through — but she is a Lagotto whose life has settled into its quietest chapter.

The work of the geriatric years is comfort. Not preservation of function that the dog is no longer asking to preserve, and not postponement of an ending that is still some distance off, but comfort. A thirteen-year-old who can still walk to the mailbox is a thirteen-year-old whose walk to the mailbox is the right walk. A fourteen-year-old who has stopped greeting visitors at the door but still lifts her head when the person she loves most walks into the room is a fourteen-year-old who is fine. The thresholds that governed middle age no longer govern.

Multimodal support becomes the norm. Pain management on whatever schedule your vet has dialed in. Cognitive support through nutrition, environment, and medication where indicated. Ramps in places where stairs used to be. Orthopedic bedding. Night lights on the route to the water bowl. Predictability in the daily schedule, which a cognitively declining dog depends on more than she used to. Gentle daily movement, because the Dog Aging Project data are clear that inactive senior dogs have dramatically higher odds of cognitive dysfunction than active ones — 6.47 times the odds, in the 15,019-dog analysis, controlling for age, breed, and health status. The brain does not benefit from being asked to do less. It benefits from being kept engaged at whatever level the body can support.

This is also the stage at which the conversation about the ending should begin in earnest, before it is urgent. Most vets are grateful when a family opens this conversation early. Most families, once the conversation is open, find it less frightening than the anticipation had suggested. What you are doing is building an end-of-life plan while everyone has time and attention and clear heads. What the plan should cover is the subject of the next three sections.

When Grief Starts Before Death

Anticipatory grief is the name for something most families with senior dogs have already experienced without having a name for it. It is the experience of grieving a loss that has not yet happened — the slow, low-grade sorrow that begins the first time you notice that the dog at your feet is a different dog from the one she was two years ago, and that the direction of travel is only one way. The veterinary literature on the subject is small but consistent. Lagoni and Shaw (2007) described it in Veterinary Clinics of North America. Spitznagel and Carlson (2021) distinguished it in the Veterinary Record from the related but separate constructs of caregiver burden and owner quality of life. Understanding that these are not the same thing, and that they affect different decisions differently, is part of the framework that helps families navigate the senior years without making them harder than they already are.

Three things are worth saying plainly. First, anticipatory grief is normal. It is not a sign that you are doing anything wrong, it is not pathological, and it is not an indication that you are letting your dog go prematurely in your head. It is the emotional work that the mind does to prepare for a loss it can see coming, and there is a robust human literature showing that going through it can mitigate the intensity of grief that follows the actual loss. Dogs get grieved in advance because they are loved in advance. The experience is testimony to the relationship, not a failure of it.

Second, anticipatory grief can lead to avoidance behaviours that end up hurting both the dog and the family. Some families, sensing the arc bending, pull back emotionally to protect themselves — and then regret the time they did not spend. Others, gripped by the opposite impulse, pursue aggressive treatments past the point where they are serving the dog, because stopping feels like conceding. Spitznagel’s work is particularly useful here: the paper profiles four owner clusters (distressed, resilient, non-distressed, other-strained) and shows that the anticipatory grief pattern correlates meaningfully with treatment decisions. Recognising which pattern you are in is part of making good ones.

Third, support exists and most families do not use it. Many veterinary schools run pet-loss support lines. The Ohio State University “Honoring the Bond” programme is a long-established resource covering both anticipatory grief and the decisions around end-of-life care. Therapists who specialise in pet loss exist in most metropolitan areas and many will take remote clients. A conversation with your own vet about what you are feeling, before you are in crisis, is legitimate and welcomed. The isolation that often accompanies pet grief — the sense that it cannot be shared because others will dismiss it — is itself treatable when it is named.

The Last Decision

There is no formula that tells a family when it is time. Anything that claims to is oversimplifying. Several frameworks exist that help structure the observation and conversation, and the two most widely used are Alice Villalobos’s HHHHHMM scale (2011, Veterinary Clinics of North America) and Dani McVety’s Quality of Life scale developed at Lap of Love Veterinary Hospice. The acronyms differ slightly; the intent is the same. Both frameworks invite the family to track, on a regular cadence, a set of specific observations: Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, and More good days than bad. The value is not in the numerical score. It is in the conversion of a vague felt sense of “she’s not herself any more” into specific notes you can share with your vet and with the people in your own life who are walking this with you.

The most useful single question, in the practical experience of veterinary hospice teams who have seen thousands of families through this, is the one that names the threshold directly: does she have more good days than bad ones, and is the trend improving or declining? A dog who has more good days than bad is a dog whose life still contains meaningful pleasure. A dog who has more bad days than good is a dog whose suffering is starting to outweigh the quality of the time remaining. When the balance tips and the trend is not reversing, the honest answer from the family to themselves is almost always that they have known for longer than they have admitted. Deciding while the dog still has dignity is almost always kinder than deciding once she has lost it. The error most families make is waiting too long, not acting too soon.

The logistics of the day itself deserve planning in advance, because planning in advance makes the actual day significantly easier on everyone present. Home veterinary euthanasia services have become widely available in most regions. Lap of Love, founded by Dani McVety and Mary Gardner in 2009, now has a nationwide network in the US; equivalent services exist in Canada, the UK, and most of continental Europe. The experience of home euthanasia, in the judgment of most families who have had it, is meaningfully better than a clinic visit. The dog is in her own space. The family can gather without appointment constraints. The vet arrives, sits with the family, talks through what is about to happen, administers the sedation that renders the dog fully unconscious and comfortable, and then the final injection. The entire process is quiet, private, and unhurried. The body can be taken for cremation if the family chooses, or they can arrange burial at home where permitted.

What families who have done this consistently wish they had known beforehand: the sedation is very peaceful. The dog does not know what is happening. The second injection works in seconds. It is not the traumatic event that the anticipation suggests it will be. The hardest part, for most families, is the week before — not the day itself.

Some families want to be physically present, holding their dog, until the last breath. Some families cannot do that and should not feel obligated to. Some families want the other dogs in the household to be present afterwards, because the anecdotal and clinical evidence suggests it helps surviving animals understand what has happened. Some families want particular music playing. Some want a particular meal served first — a steak, a plate of cheese, something the dog loved and was never allowed. There is no wrong answer to any of this. There is only the answer that is right for your dog and your family, and the decisions are easier to make before you are inside them.

And then you say goodbye.

The Before Letter

What follows is optional. It is here because, in the years of conversations about end-of-life care with families who have been through this, one exercise comes up repeatedly as the thing the families wish they had done earlier — and the families who did do it report back that it made the actual day meaningfully easier.

The exercise is this. While your dog is still healthy, or at least still comfortably herself, take some time to write down what you want her last good day to look like. Not in morbid detail. Not as a script. Just as a letter to your future self, clarifying the preferences and decisions that are easier to think about from a place of calm than from a place of grief. Decisions made from love are easier than decisions made from panic. This is a way of making them from love.