We’re not talking about the “Sit. Shake.” kind of shake. Nor the fun way they shake off water starting from their nose all the way to the end of their tail. (FYI, dogs can shake off 70% of the water on their fur in just four seconds!)
No, we’re talking about that full-body trembling you’ve likely seen your pooch do from time to time. Why do they do it? And is it something you should be worried about? Let’s shake a leg and find out.
A majority of dog owners in an IAMS™ survey* (64%) think dogs shake because they’re cold. Other top responses were because they’re scared (57%) or anxious (54%).
High-fives all around because it turns out there are a number of reasons dogs shake, and all those are possible correct answers.

Just like their owners, dogs will often shiver when cold.
Opens a new windowDr. Tammie King, Applied Behavior Technical Leader at Waltham Petcare Science Institute, says: “Dogs shiver in response to falling temperatures. Dogs with short or no hair are especially susceptible. You should get them warm, put coats on them or bring them inside.” Same goes for you.

“Shaking is a response to epinephrine or adrenaline secretion — a sign of anxiety where the dog is on high alert,” says
Opens a new windowJames Serpell, B.S., Ph.D., Professor of Humane Ethics & Animal Welfare at the University of Pennsylvania School of Veterinary Medicine. You may notice this when you’re at the vet or there’s a situation where they feel threatened. Dr. Serpell also offers a way to help in some cases: “Identify what’s triggering the behavior. Provide them comfort. Going forward, you can gradually desensitize your pet to the thing it’s afraid of.” Unless it’s clowns. Those are always scary.
Trembling can also be a sign of serious issues like injury, poisoning or kidney disease. Opens a new windowDr. Jo Gale, BVetMed CertLAS MRCVS, Senior Manager, Global Science Advocacy at Waltham Petcare Science Institute urges pet owners to be vigilant: “If a pet is unwell in another way, they could be trembling.” If their shaking is accompanied by symptoms like diarrhea, limping or vomiting, you should consult your vet straight away.
*Surveyed U.S. dog owners, age 18+
Sample Size: n=201
Fielded May 8-10, 2020
Between 25 and 40% of dogs are overweight, but often, owners don't know it until they take their dog to the veterinarian for another reason. Yet, even veterinarians can't tell if a dog is fat just by its weight. Ideal weight varies by breed, and quite widely within breeds. There's no ideal weight chart for all dogs!
You can judge your dog's condition by placing your hands on each side of his rib cage. Are the ribs protruding? Your dog may be too thin. Can you feel individual ribs easily, and is your dog's abdomen slightly tucked up when viewed from the side? That's the sign of ideal weight. If you can't feel the ribs easily, your dog has no waist, and his abdomen drags, he's too fat. Your veterinarian can help you further evaluate your dog's weight.
Before beginning any weight loss program with your dog, discuss it with your veterinarian.
You can begin your dog's weight-loss program by reducing caloric intake by 25% of his maintenance intake, and then decrease it by 10% increments every two to three weeks until a 1% weight loss per week is achieved. This means that, if your dog weighs 15 pounds, a 1% loss would be about 2-1/2 ounces.
If you feed one large meal a day or keep food available at all times, try dividing the daily ration into several small meals (at least two meals a day) and pick up what has not been eaten 30 minutes after each meal.
Dogs gain weight for the same reason that people do—they eat more calories than they use. Today's dogs share another problem with their parents: lack of activity. Most parents are gone all day and come home too tired to play with the dog.
Also, as dogs age, or after they are spayed or neutered, their metabolism might slow causing them to require less food.
Another reason for weight gain is frequent, high-calorie treats. Sometimes, more than one family member is feeding the dog, and the dog sure isn't telling!
Losing weight isn't easy. Changing habits is the key. Here are some ways you can help:
Determine who feeds the dog what and when. (Don't be embarrassed to admit you give your dog treats. Dogs are expert beggars.)
Substitute affection for treats. Give a pat or throw a ball when he noses your hand.
Take your dog for a walk more often. Even 10 minutes a day can help.
Feed him more often. It takes energy to digest food. Dividing your dog's daily ration into two or three feedings will help.
Reducing your dog's regular food amount by 25% should bring results.
If your dog is more than 15% overweight, your veterinarian might recommend a special food. Diet foods should be low in fat (under 20% of calories from fat).
Your goal is to help your dog be healthier, so select his food carefully. Some diet foods just add fiber to help the dog feel full. This can result in reduced digestibility, large stool volume, frequent trips to the backyard, and decreased skin and coat condition because the dog isn't getting enough fat and nutrients.
Find a food, such as IAMS™ ProActive Health™ Adult Healthy Weight, that has normal fiber levels to keep your dog's digestive system working properly. It should have high-quality protein so your dog doesn't lose muscle tone and essential fatty acids to help keep his skin flexible and coat glossy throughout the dieting process. After your dog reaches ideal weight, select a maintenance food to keep weight steady.'