When is my dog considered a senior?
Even if your dog still has that playful, puppy-like energy in their later years, most dogs are considered “senior” during the last quarter of their expected lifespan:
- Large dogs: around 6–7 years old
- Small dogs: around 8–10 years old
Your vet can help you understand when your dog enters this life stage and what care they need. Having those conversations early and regularly can help you stay ahead of changes and may make them feel more manageable over time.
Why are routine senior dog wellness exams important?
As dogs get older, aging can affect many parts of their body.
Senior dogs are at a higher risk of developing health problems – like high blood pressure, kidney issues and cancer. Some can become more fragile, meaning they may lose strength, tire more easily, and recover more slowly from illness or injury.
That’s why regular wellness visits to your veterinarian are one of the best ways to stay on top of your dog’s changing health needs.
What your vet checks during senior visits
Senior dogs should visit the veterinarian at least every 6 months. These visits typically include checks of:
- Body temperature
- Heart rate
- Breathing
- Pain
- Weight, body condition, and muscle tone
- Routine wellness tests
Tracking these measures over time helps veterinarians notice small changes that may signal developing health problems.
What routine tests can tell us about your senior dog
Many health problems in senior dogs begin quietly. It’s also common for them to have more than one health issue at the same time. Your dog may look or seem fine at home, even when something is changing inside their body. Routine bloodwork and testing are important because they help find problems early—sometimes before symptoms appear.
Depending on your dog’s age, health, and exam findings, your veterinarian may recommend:
- Routine blood tests to check the kidneys, liver, blood sugar, thyroid, red and white blood cells, and for signs of infection
- Urine tests to check kidney health and look for infection
- Stool tests to check for parasites (worms!)
- X-rays or an ultrasound to look at the organs inside the body
- Cancer screening tests, as cancer risk rises with age
- Blood pressure checks as high blood pressure can harm the eyes, kidneys, heart, and brain
Watching for changes over time can help your vet spot potential problems. Even small deviations from your dog’s normal results can be important. These tests provide information on what’s happening internally—things you simply can’t see from the outside.
Physical changes you may notice as your dog ages
As dogs grow older, their bodies can change in quiet, gradual ways. Some of these changes can be early signs of health issues and are easy to overlook because they tend to happen slowly. Paying attention to physical changes—even subtle ones—gives you valuable information to share with your vet.
Things to watch for include:
- Changes in weight or body shape: Some senior dogs gain weight as they move less, while others lose weight despite eating normally. You may also notice muscle loss, especially along the hips, back, or hind legs. These changes can affect strength and balance.
- Changes in coat and skin: An older dog’s coat may become thinner, less shiny, or slower to grow back after grooming. Their skin may feel drier, and lumps or bumps may appear. Many growths are benign, but any new mass should always be checked by your veterinarian.
- Dental and mouth changes: Bad breath, drooling, or dropping food can sometimes signal dental disease, which can affect your dog’s overall health and comfort.
- Vision and hearing changes: You may notice hesitation in low light, bumping into objects, or reduced response to sounds or their name if your dog is experiencing vision or hearing loss. These changes can make dogs feel uncertain in familiar spaces and may affect their confidence.
- Lower stamina or endurance: Your dog may tire more quickly on walks or need longer periods of rest after activity. A noticeable drop in energy or stamina is always worth discussing with your vet.
Keeping track of physical changes over time can help your vet spot patterns and decide whether further evaluation or testing is needed. You don’t need to know what the change means; simply noticing and sharing it is an important part of senior care.
Spotting pain: the quiet ways dogs ask for help
Pain is common in senior dogs, but it can be hard to spot.
They may not cry or limp when something hurts. Instead, they may “tell” you through small shifts in behavior:
- Slower movement
- Trouble getting up or lying down
- Avoiding stairs or jumping
- Pacing, restlessness, or hiding
- Being less friendly or more irritable
Pain may come from arthritis, dental problems, or other illnesses. Your vet can help find the cause and create a plan to keep your dog comfortable.
Changes in behavior and thinking: when the world feels different to them
As dogs age, their minds can change, too. You might notice moments that feel out of character—hesitation in familiar rooms, getting “stuck” in corners, or daytime naps paired with nighttime wandering.
These aren’t “just old age": they can be meaningful clues.
Cognitive changes
Some senior dogs develop changes in how they think and act. Common signs include:
- Seeming confused or lost (e.g., staring at walls)
- Changes in how they interact with people (e.g., not responding to their name)
- Accidents in the house
- New anxiety or restlessness
Screening for these changes starting around 6-8 years of age helps your veterinarian understand your dog’s normal behavior. This makes it easier to notice changes early.
Behavior changes
New behaviors can be a signs of pain, vision or hearing loss, or another condition. While these do not always mean something is wrong, it’s important to pay attention to certain clues like:
- Barking more
- Being fearful
- Pulling away from family
Speak with your veterinarian if you notice these changes so the underlying cause can be evaluated.
Does your senior dog need a new diet? It depends.
Nutrition plays an important role in helping senior dogs stay strong and healthy. But not every older dog needs the same kind of food or a special “senior” diet. Some older dogs do well on their regular adult food; others may need changes based on their weight, muscle strength, or health problems.
Before making a nutrition recommendation, your vet may look at your dog’s:
- Weight: Older dogs may move less and need fewer calories. Regular weigh-ins make sure your dog is getting the right amount of food.
- Appetite: Some senior dogs may lose some of their sense of smell, making food less appealing.
- Muscle condition: Many senior dogs need high-quality protein sources to help maintain muscle strength.
- Joint health: Some senior diets contain omega-3 fatty acids, which may help support joint health.
- Brain health: Some dogs with cognitive changes benefit from certain nutrients, such as antioxidants and special fats.
Your vet may recommend a special or prescription diet based on your dog’s health status, weight, and medical needs.
Helping your dog move safely at home
Senior dogs may begin to have trouble moving around. This can happen because of weak muscles, joint pain, changes in balance, or vision loss. These changes can make even familiar spaces harder for them to navigate safely.
Dogs with vision loss may struggle more in dim areas or unfamiliar spaces. Poor lighting can increase fear and fall risk.
A few simple ways to make your home safer include:
- Adding rugs or mats to slippery floors to provide traction
- Using ramps or steps for cars, beds, or furniture so your dog does not need to jump
- Adding lighting in hallways, stairways, and areas used at night
- Keeping furniture in the same place and reducing clutter to prevent tripping
- Taking short, easy walks to help keep muscles strong
- Ensuring easy access to a bathroom area
Try to write down any changes you notice so you can share them with your vet. You aren’t expected to notice every change—that’s why your vet will check your dog’s movement at every senior visit and discuss a plan with you.
Don't forget to care for yourself, too
Supporting a senior dog is an act of love, but it can also be emotional and exhausting. You may feel worry, sadness, frustration, or even guilt as your dog’s needs change. These feelings don’t mean you’re doing anything wrong. They’re part of caring deeply.
Simple ways to support yourself include:
- Sharing care when you can: Ask family or friends to help with walks, meals, or medications.
- Leaning on your veterinary team: Bring questions to visits and ask what changes to expect next.
- Creating steady routines: Consistent schedules help both you and your dog feel calmer.
- Protecting your energy: Take breaks and accept help.
- Talking with others: Connecting with others who have cared for senior pets can help you feel less alone.
- Acknowledging hard emotions: Feelings like frustration or sadness are normal and often exist alongside love and joy.
When you care for yourself, you can best care for your dog.
Celebrating the golden years together
Growing older doesn’t mean your dog stops being your dog. The white around their muzzle, the slower pace on walks, the deeper naps — these changes are part of a shared history.
Caring for a senior dog is both a responsibility and a privilege. Staying engaged with your vet during this time can help you make thoughtful, informed decisions as your dog ages. That might include more frequent wellness exams, conversations about behavior or mobility changes, or discussions about whether additional screening makes sense for your individual dog. With the right support and a proactive approach to health, many dogs can continue to enjoy comfort, connection, and quality of life throughout their golden years.
Frequently asked questions
Frequently asked questions about this topic
Watch for changes in movement, sleep, appetite, or behavior. Pacing, hiding, or pulling away can all be signs of pain. If you notice any changes, schedule a veterinary visit.
Yes, but vaccine plans may change with age, health, and lifestyle. Your vet will recommend the safest and most appropriate course of action for your dog.
Nighttime restlessness can happen for a number of reasons as dogs get older. For some dogs, it can be caused by pain, anxiety, or changes in thinking. If your dog seems uncomfortable, unsettled, or is sleeping differently than usual, it’s a good idea to talk with your veterinarian. They can help look at the full picture and decide whether any next steps are needed.
For some dogs, drinking a lot of water can signal an underlying health issue, such as kidney disease, diabetes, or hormone changes. If you notice your dog drinking more than usual or needing to go outside more often, it’s worth checking in with your veterinarian. They can help determine whether an exam or testing, like blood work, are appropriate next steps to uncover what’s going on.
Eating dirt or other nonfood items can sometimes be linked to boredom, stress, or nutritional imbalances. It may also point to digestive issues or changes in how their body absorbs nutrients. If this behavior is new or persistent, your veterinarian can help determine the cause and recommend next steps.
Weight loss despite eating normally can be an early sign of an underlying health problem, such as digestive issues or cancer. Because these changes can be subtle, they’re easy to miss. A veterinary visit can help identify the cause and create a plan to support your dog’s health and comfort.
