Pit Bulls Were Never "Nanny Dogs". Never. It's A Myth

[Drahthaardogs]

71. Since you asked,

Generally speaking there are several types of aggression many are bad, some are good. Territorial aggression and predatory aggression are two traits that lots of breeders try hard to instill in their dogs. However, when you breed without some guidelines and the ability to keep inferior animals from breeding, you get junk.

Many breeders do this themselves. Labradors are a good example. The dogs today can do things they could NOT do 30 years ago. Puppies are doing things adult dogs had difficulty with. Selective breeding has improved them tremendously. And yes, that drive to go through a frozen pond, that is prey aggression.

The fact that you can only think aggression = attack people or other dogs shows how little you know. Read a book and educate yourself a little bit.