A dog standing on a sand dune on the beach.

Many dogs, like their owners, are more active in the summer — especially those who tend to hibernate during the snowier months. Simple logic might tell you that more activity means your dog needs more calories. So, should you switch to a summer dog diet? In most cases, it’s not necessary.

Do Dogs Eat Less in the Summer and More in the Winter?

Ever notice how you crave heavier “comfort” foods like lasagna in the winter but opt for lighter salads in the summer? The same phenomenon can occur in dogs, too.

In the winter months, dogs that are outdoors a lot need about 7.5 percent more calories for every 10-degree drop in the temperature to help them generate heat. The opposite is also true: in warmer temperatures, they tend to need about 7.5 percent fewer calories for every 10-degree increase in temperature.

That said, if your dog is involved in any high-intensity sports or competitions over the summer, it’s best to confer with your veterinarian about your dog’s nutritional needs.

In Most Cases, No Summer Dog Diet Changes Are Necessary

Rather than switching your dog to a “lighter” diet, a better option might be to feed them a slightly smaller amount. Again, your veterinarian can help you determine how many calories your dog needs in the summer.

You generally want to keep your dog’s diet consistent unless he or she has a special health condition such as allergies, obesity or arthritis that can be helped with a dietary change. In those cases, you want to make a gradual switch to the new diet because abrupt changes can lead to tummy upset, vomiting and diarrhea.

Monitor Your Dog’s Figure

One of the best ways to tell if your dog is eating the right amount is by using a body condition scoring system. Ideally, you should be able to feel your dog’s ribs, and there should be an obvious waist just after the rib cage when viewed from above. If your dog has lost its waist or the ribs are hidden under a thick layer of body fat, it’s time to cut back on the extra table scraps.

While it can be common for dogs to eat less food in the warmer months, a loss of appetite can also be a sign of disease. If you notice your dog’s ribs are showing and his or her appetite seems to have vanished, call your veterinarian.

Don’t Forget the Water in a Summer Dog Diet

Many people don’t realize that water is an important part of every dog’s diet. During the warmer months, make sure your dogs have plenty of fresh water available. That way, they’ll be well hydrated for all those outdoor adventures you’ll take together.

So, Should My Dog’s Diet Change for the Summer?

In most cases, your dog’s diet is probably fine as is, especially if they were healthy and happy heading into the summer season. If you ever have any questions about your dog’s diet, be sure to ask your veterinarian.

 

The information in this blog has been developed with our veterinarian and is designed to help educate pet parents. If you have questions or concerns about your pet's health or nutrition, please talk with your veterinarian.