Cancer is a leading cause of death in both humans and pets; studies suggest that between one-third and one-half of all dogs ...

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.

"My Labrador has a tumor on his spleen. Should it be removed? Should the spleen also be removed?" A: Each dog's case is different, and you will need to discuss this with your regular veterinarian, as ...

"My dog has a tumor that has just popped up on her bottom jaw, and it's getting rather big rather fast. It's kind of hard and feels like a muscle. Do you think ivermectin might help? She is only 5 or ...

A study found that meningiomas — the most common type of brain tumor in humans and dogs — have similar genetic makeup Nicholas Rice is a Senior Editor for PEOPLE Magazine. He began working with the ...

Q: I recently adopted Missy, my mother’s middle-aged, mixed-breed dog. She was never spayed, and she has two small masses in her mammary glands. Are these masses likely to be cancer? If not, should I ...

Meera Pal is a Northern California-based writer with a background in journalism and books. She covers pets, real estate, tech, and everything in between. You can follow her on Twitter @Meerakat Kelly ...

A lipoma is a benign (noncancerous) tumor of fat in middle-aged or older dogs. Lipomas can grow anywhere on the dog's body, even inside their abdomen. But the most common growth is under their skin ...