Flakey Lump On Dogs Back. It does not seem to itch, although he does like to roll onto his back and squirm around on the floor. Most common bumps and lumps on puppies.
Some of the common causes of crusty scabs on your dog’s back are: Usual locations for sebaceous cysts are the trunk, neck and head. It’s raised up from the skin and top part has something that looks like an eye (think about pimple) and today it’s kind of flaky.