If they don’t take in more calories, they will lose weight.ĭental disease and other oral problems: Any problem that makes chewing and swallowing painful or difficult will discourage a dog from eating. Reproduction: Pregnancy and lactation (nursing puppies) put extra nutritional demands on dogs. Conversely, hot temperatures can reduce a dog’s appetite.

The environment: Dogs require extra energy to stay warm when they spend lots of time in the cold. Stress: A dog that’s anxious or stressed may find it hard to relax and eat because they feel like they always need to be on alert.Įxercise: Dogs that start exercising more but don’t take in more calories will lose weight. Feeding too little or giving your dog low-quality dog food can also lead to weight loss. A change in diet may be to blame, or perhaps a large bag of food has started to go bad before your dog has finished it. Here are a few of the most common causes of unexplained weight loss:Ī problem with their food: Dogs may eat less when there is something they don’t like about their food. Problems with a dog’s diet, environment, and health could all be to blame. Or maybe they are staying inside more during the winter in this case, they’ll probably gain a little.īut what about a dog that keeps losing weight and you don’t know why? Unexplained weight loss can be the first sign that a health problem is brewing. If you change their diet to one that isn’t to their liking, they’ll probably lose a few pounds.

It’s normal for a dog’s weight to vary a little bit over time.

Diabetic dog losing weight