Pimple On Dog Head. If it bursts a white paste-like or cottage-cheese-like material is seen. Lumps can appear in different sizes shapes and even colors.

Although sebaceous cysts have a unique appearance getting a diagnosis from a veterinarian is always recommended. Small bumps on dogs can be on the skin or under the skin. They can often disappear even without treatment.
When it bursts a white pasty substance comes out.
Sebaceous cysts can develop on dogs of the oil glands beneath the skin become blocked. If left alone it might go away without treatment but may recur. Sebaceous cysts can develop on dogs of the oil glands beneath the skin become blocked. Lumps can appear in different sizes shapes and even colors.