These are benign, meaning not cancerous. Fewer than half of lumps and bumps you find on a dog are malignant, or cancerous. Still, they can look the same from the outside, so it’s hard to tell.

Seasonal allergies are a common cause of atopy but the disease can progress to year-round misery for your dog. Signs of atopic dermatitis include areas of raised bumps, reddened skin, crusty ...