Mast cell tumors can seem like nothing. I mean that literally. They might well look like flea bites or pimples or hot spots. But they’re not. They are (for all intents and purposes) skin cancer.

Dogs are more than just pets. They are one of the few animals that have integrated from a pet or companion status toward actually playing a productive role in human society. Many humans actually depend on dogs to live. What other animal can we say that about?