Tumors develop when cells in the body grow uncontrollably. Finding a tumor on your dog can be very frightening, but they are not always detrimental — some are benign, while others are malignant.

While mast cell tumors can occur in dogs of any age, the Merck Veterinary Manual notes they are more common in senior dogs, between the ages of 8 and 10. Other Common Health Conditions in Dogs ...

Because some types of dog skin cancer, including dog melanomas and mast cell tumors, can be fatal if untreated, it is important that you have your veterinarian check any suspicious growths.

Mast cell tumors are the most common tumors affecting skin in dogs, representing between 15 percent and 20 percent of all skin tumors. They represent 25 percent of all malignant ...

A veterinary expert answers commonly asked questions about cancer in dogs, including what common symptoms to look for, cancer rate differences by breed, and how to help prevent cancer in your pet.

Dogs are like humans in many ways, including how their immune systems recognize and respond to malignant tumors. A new trial undertaken by Gates Institute member Steven Dow, DVM, will investigate ...