Does Winter Weather Change My Pet’s Nutrition?

Tuesday, December 27, 2016 | Pet HealthPet Tips

winter pet nutrition

In many areas, late autumn and winter can bring plenty of bone-chilling cold and skin-soaking wet weather. As the air grows colder and the days get shorter, you may wonder if you need to change your pet’s diet. The answer depends on where you live, the type of winter weather you have and how much time your pet spends outdoors.

When home is where it’s perennially warm

If you live in the southern United States or on the West Coast and your dog or cat lives indoors, it’s unlikely that you’ll need to change your pet’s diet during cooler months, as long as his activity level stays about the same. If your dog lives primarily outdoors, however, you may need to make minor adjustments. The key is whether your dog gets a consistent amount of exercise from season to season — something that can be tough to do with less daylight and potentially more rain.

Indoor dogs living in four-season areas

Our furry friends who live predominantly indoors in cold, snowy areas depend on us for their daily dose of exercise. As temperatures drop, some of us — including our canine companions — become increasingly reluctant to leave the comfortable warmth of our homes to go for walks or to visit the dog park. Since less exercise means fewer calories used, you may need to feed less to help your canine companion maintain a healthy weight. The other option is to maintain the same activity level no matter what the weather. If you and your dog spend a lot of time outside enjoying the cold weather and snow sports, you may need to increase your furry friend’s food. As always, check with your veterinarian before making any dramatic changes.

Dogs with outdoor residences in four-season locales

If your dog lives outdoors almost exclusively during the cold winter months, you’ll want to discuss changing his diet with your veterinarian. Like us, dogs (and cats) shiver to keep a consistent body temperature. But shivering uses a lot of energy (calories). So your dog may need two to three times his normal amount of calories during cold weather. The increase in calories leads to more fat accumulation and helps compensate for the calories lost to shivering.

It’s also important to note that an outdoor dog’s metabolism changes during cold weather, and his body will preferentially use fat rather than glucose (sugar) for energy. This means your cold-weather outdoor dog may benefit from a dog food that’s higher in fat.

Finally, a number of factors, ranging from your dog’s size, his coat type and length, and his outdoor shelter, will affect the amount of food he needs.

It’s not only about the cold (and snow)

Cold temperatures aren’t the only environmental factor that affects our pets’ nutritional needs during late autumn and winter. A decrease in daylight triggers changes in our dogs’ metabolism, slowing it down to conserve energy and promoting fat accumulation to help protect dogs from the upcoming cold.

Fewer daylight hours can also mean less exercise for our furry friends. Just like the gradual decrease in temperature, less daylight may mean you’re more reluctant to walk your dog or play outside with him as you were when there was more daylight. So if your indoor dog isn’t getting as much exercise as he was during spring and summer, you may need to decrease the amount of food fed.

And then there are cats

Indoor cats who get a consistent amount of activity from one season to the next don’t need more food during the winter. And like dogs, cats that spend a lot of time outside during cold weather will need more food to maintain a consistent body temperature without losing weight. That said, a four-year study of 38 cats showed that cold weather and daylight length stimulates the appetite and food amounts consumed by both indoor and indoor-outdoor cats. The amount of food eaten was greatest during October through February and lowest during June through August. The changes in appetite didn’t lead to substantial weight changes, suggesting the amount of food consumed by the cats was in response to changes in energy needs.


Every pet is an individual, and the best feeding program is one tailored to your pet’s unique needs. Be sure to talk with your veterinarian about your dog’s or cat’s nutritional needs during the winter months.

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