Why Is My Dog's Occiput Getting Bigger?

Did you notice that the small bump towards the rear of your dog’s head seems to be getting bigger? The “smart bump” (officially called an occiput) is a normal part of a dog’s anatomy and seems to be more pronounced in some dog breeds, especially Labradors. However, a change in size or appearance can be a cause for concern.. A dog’s occiput is supposed to remain fairly the same size and look just about the same for most of their lives, although it can temporarily appear bigger as the dog grows from a puppy to an adult..