Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Senior Dog Behavior Changes: Vet-Approved Care Guide

Senior dog resting at the floor

It’s a beautiful thing to watch your dog grow up and move from puppyhood to adulthood and eventually become a senior dog. Throughout the years, you would’ve seen them change in various ways, but the most noticeable changes often occur when they reach their senior years. Your dog’s hair may have grayed, they may not be as mobile, they may struggle to hear you when you call for them, and they may suffer from a few health issues. Aging is a normal part of life, and the best thing you can do is keep your dog safe, looked after, and comfortable.

If you haven’t seen too many behavioral changes up until this point or are wondering why your dog is acting differently, keep reading because we’re going to discuss what you can expect at this stage in your dog’s life and how you can care for them best.

divider dog paws 4 oct 2024

Why Has My Senior Dog’s Behavior Changed?

It’s difficult to watch your dog change, and although you may want to keep up with the same activities that you and your dog enjoyed together, your dog may not be able to anymore. Although many people put behavior changes down to conditions like cognitive dysfunction syndrome or canine dementia, many behavior changes are often due to other conditions.

These changes could be affected by cognitive decline, but pain, loss of sensory function, disease, and anxiety can all play a part. It is so important to take your dog to the veterinarian at least twice a year for a full examination and bloodwork to ensure that any underlying problems can be identified and treated.

Aging is a natural process and will result in your dog slowing down. However, if your dog’s behavior is concerning to you or has changed suddenly, a consultation with the veterinarian is a must.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

The 6 Behavioral Changes You Can Expect From an Older Dog

1. Sleep Changes

All dogs sleep quite a bit, but older large dogs can spend up to 20 hours a day sleeping, with smaller breeds sleeping up to 15 hours a day. Senior dogs sleep more because they tire more easily and because sleep is restorative. Sleep also helps your dog’s body fight infections.

Increased sleep isn’t a sign of concern unless it happens suddenly or you notice changes in your dog’s sleep cycles. For example, if your dog suddenly starts waking up at night and aimlessly walks around, starts sleeping in unusual places, or falls asleep in unusual positions, these can be signs that something isn’t right, and you should chat with your veterinarian about the behavior.

Your dog might also be sleeping more because they are suffering from pain or have restless nights due to increased anxiety. Poor sleep quality may cause your dog to nap more, which you may notice throughout the day.


2. Dietary Changes

Once your dog becomes a senior, you need to change their food to senior dog food because it is nutritionally balanced to meet their needs. It should contain high-quality protein and meet your dog’s caloric requirements.

Senior dogs tend to suffer from gum disease, which can make eating their regular kibble painful. If this is the case for your dog, you may need to change their food to a softer alternative. If you don’t, your dog may stop eating, which can cause weight loss and other complications.

PetKeen_Healthy-Dog-Gums-VS-Unhealthy_Infographic_v2-1_Apr-28-2023
You are free to use this image but we do require you to link back to Dogster.com for credit

3. Reduced Activity

Although senior dogs tire out faster and need more rest than they did when they were younger, they still need exercise to keep healthy. Exercise should remain part of your dog’s daily routine, but it should be gentle and at their pace. Senior dogs shouldn’t be pushed to walk further than they’re able to or undergo any activity that is too strenuous for their body. Always be aware of the weather, and if it is too hot, wait to walk your dog in the evening when it is cooler.

It’s also important to keep your dog mentally active, so food puzzles and games such as fetch are encouraged. Although your dog might be less mobile due to painful joints because of conditions like arthritis, gentle movement is helpful to prevent stiffness and weight gain.


4. Weight Changes

It is common for senior dogs to gain weight because they are less active, and their metabolism slows down. It can also happen if you don’t move them to the appropriate food. Weight gain in older dogs is a problem because it can be harder for them to lose weight; plus, it puts more pressure on their joints and shortens the dog’s lifespan. It also has the potential to increase conditions such as heart disease and diabetes.

The opposite is sometimes seen in older dogs, too. If your dog is losing weight, it might be because of an underlying health issue, such as dental disease. Unexplained weight loss is concerning and should be looked into by your veterinarian.

senior basset hound
Image Credit: Michael J Magee, Shutterstock

5. Less Responsive

Your dog may lose their vision or hearing as they age. Thankfully, it usually happens over time, which helps the dog rely on their other senses more. Unfortunately, not seeing or hearing as well as they once did can cause them to get startled easily and snap out of fear. If you’re not aware of their loss of sensory function, you may think your dog has become aggressive with age.

It’s important to look out for other signs of sensory function loss, such as no longer greeting you at the door when you arrive home, not responding to sounds or movement, and bumping into objects when it isn’t in their usual spot. It’s important to take your dog to the veterinarian if you suspect that they are going blind or deaf. Some causes are treatable, but some are not, and you may need to make adjustments to your home to accommodate your aging dog.


6. Increased Irritability

Dogs with cognitive dysfunction may behave more irritably, but pain and anxiety can also cause this behavior. If your older dog has started showing signs of aggression, don’t ignore it because it could be their way of expressing that something isn’t right.

Being touched or struggling to move around with ease because of arthritis can put your dog in a bad mood. In the same way, not being able to eat without experiencing pain can have the same effects. A new puppy or baby in the house may also cause your dog to become irritable because of the noise, stress, and unpredictability they bring.

German Shepheard angry agressive
Image Credit: Dyrefotografi, Shutterstock

divider dog paws 4 oct 2024

Conclusion

Senior dogs experience many changes in their appearance, health, and behavior. Some common behavioral changes you can expect are changes to their sleep, diet, activity, and weight. You may also see changes in their vision and hearing as well as in their tolerance.

Senior dogs can become irritable, but it is usually because of an underlying issue such as pain, anxiety, or cognitive dysfunction. If you notice any sudden changes or have any concerns about your senior dog’s behavior, it’s important to have them seen by their veterinarian.


Featured Image By: Larissa Chilanti, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Kirkland vs Blue Buffalo Dog Food Comparison 2025: Which Is Better?

Choosing the right food for your dog should be simple, right? We get it—with countless brands, endless ingredient lists, and ever-evolving advice on...

Dogue De Bordeaux Dog Breed: Info, Pictures, Care & More

The Dogue De Bordeaux is a powerfully built, almost brutish fawn Mastiff-type breed with a soft heart of gold and a staunch loyalty...

8 Dog-Friendly Hiking Trails in Arizona (2025 Guide)

From pastel-colored rock formations to the Grand Canyon itself, Arizona is home to some of the world’s most gorgeous natural landscapes. If you’re...

Is Watching Dog Videos Good for You? (What Science Says!)

Watching animal videos has become a staple of spending time on social media. While cat videos seem to top the charts, dog videos...

More related

How Strong is a Golden Retriever’s Bite? Measured in PSI

While we think of Golden Retrievers as sweet and loving dogs, they are still capable of a surprisingly strong, even dangerous, bite if...

BarkBox vs Chewy Dog Subscription Box: Complete Comparison 2025 Update

Each year, Americans spend at least $72 billion on their pets. From premium pet food to dog subscription boxes, spoiling your pet is...

How to Socialize a Puppy: 8 Vet-Approved Training Tips

Socialization is necessary for healthy growth and development in puppies. Puppies will learn a lot about their surroundings within their first 3 months...

What Do Pet Stores Do With Unsold Animals? Facts & FAQ

I often see people who purchase a pet store puppy because they want to “rescue” it. By doing so, they support a system...

Keep reading

10 Best Dog Foods for Bichon Frises in 2025 – Reviews & Top Picks

There are a few things to consider when looking at reviews for the best dog food for Bichon Frises. Keep in mind that a few of these options include ingredients for specific diets that are not required unless specified by...

Bichon eating

Can Dogs Eat Carrot Cake? Vet-Reviewed Facts & Safe Recipes

We are all well aware that human foods can be harmful to dogs. Some just don’t have any health benefits for canines, while others are highly toxic to them, including many sweet treats. Dogs shouldn’t eat carrot cake, though if...

Can Dogs Eat Carrot Cake

Why Does My Puppy Eat So Fast? 5 Vet-Reviewed Reasons & Advice

Bringing a new puppy into your home is always exciting, but along with the good can sometimes come some bad. Your puppy may exhibit some behaviors that you need to train them out of, like chewing on absolutely everything or...

Great Dane Puppy Eating

Is Corn in Dog Food Bad? Vet Approved Ingredient Guide

Corn is a controversial ingredient that is used in a lot of commercial dog foods. It is very much a normal dog food ingredient in grain-inclusive diets and has been for quite some time. In fact, according to The Institute...

lots of corn

Freeze-Dried Dog Food: 8 Vet-Verified Pros & Cons

Freeze-dried raw dog foods are becoming a popular option because of their high palatability and ability to provide a raw diet rich in vital nutrients. These diets also take the guesswork out of feeding a raw diet, ensuring your dog’s...

Freeze Dried Cat or Dog Food

The Farmer’s Dog Food Review 2025: Pros & Cons (Vet Approved)

If you’re thinking of switching your dog to a fresh selection diet, chances are you have heard of The Farmer’s Dog Fresh Dog Food. When it comes to fresh diets, where does The Farmer’s Dog rank on the list of...

Finn Dog Supplements Review 2025: An Expert’s Breakdown

Have you ever found yourself searching high and low for the perfect supplements to meet your dog’s needs? It can be confusing with the number of products on the market, and many of them are designed in fancy and eye-catching...

DOG_SAPR_Finn Dog Supplements

Crave Dog Food Review 2025: Recalls, Pros & Cons

Review Summary Crave dog food is a newer brand that offers dry and wet food formulas. The brand promotes grain-free diets and features meat-based lean proteins. Like all AAFCO-approved brands, Crave offers complete and balanced nutrition for dogs. As with...

Dogster_Crave Dog Food Review