Myth #2: Bully breed brains grow continuously, causing them to go crazy.
This rumor is actually a hand-me-down: The first dogs associated with it were Doberman pinschers in the 1960s. The idea was that the brains of these canines grew continuously, ultimately causing the dogs to go crazy and turn on their owners. Variations of this tall tale even suggested that a Doberman’s skull was too small to contain its swelling brain and that the expanding organ would eventually explode inside its cranial home.
Eventually, when bully breeds picked up their own unfair reputation for aggression, they inherited this myth. According to Delise’s book The Pit Bull Placebo, the truth of the matter is that the bully brain grows as same rate as any other dog’s brain, and there has been no scientific study thus far that proves otherwise. Brain swelling typically develops only as a result of a head injury, and if a swelling brain could actually explode inside a skull, no dog with that condition would be capable of executing a crazed attack — or doing much of anything, for that matter.