Dogs may shiver or tremble for many reasons, including pain, poisoning or kidney disease, according to WebMD. Dogs may also shiver due to seizures or other neurological conditions. More » Pets & Animals Pets Veterinary Health

According to The Daily Puppy, most dog breeds cannot withstand temperatures lower than 32 degrees Fahrenheit. However, there are certain dog breeds such as the Siberian Husky that may be able to withstand slightly colder... More »

Small dogs shake and shiver when they are excited, nauseous, elderly, in pain or if exposed to toxins, advises WebMD, in its Healthy Pets, Healthy Dogs section. Medical conditions, such as distemper and generalized tremo... More » Pets & Animals Pets Veterinary Health

Excitement, old age, pain and nausea are all causes of trembling in dogs, according to WebMD. Trembling or shivering may be a sign of something serious, such as an injury, kidney disease or poisoning. More » Pets & Animals Pets Veterinary Health

Poison, liver disease, low or high blood sugar, and kidney disease are some common causes that can trigger seizures in dogs, according to WebMD. Anemia, head injury, an electrolyte problem and stroke may also lead to sei... More »

Dogs can exhibit signs of excessive water drinking for a variety of reasons, including life-threatening dehydration, illness, side effects to medication, diet and physical activity, according to WebMD. If a dog is dehydr... More »

Some reasons that dogs refuse to eat are sickness, unfamiliar surroundings, being picky and recent vaccinations, explains WebMD. Owners should seek veterinary care when a dog suddenly stops eating to check for illnesses ... More » Pets & Animals Pets Veterinary Health