Before I get thrown under the bus lol, I am not a breeder nor have I ever wanted to breed. My Nila is fixed and is strictly a house pet. I was watching youtube videos and ran across one where a man breed son to mother!! I am just curious would this not produce mutated puppies? Is this common practice? It seems disturbing and odd to me that a son/mother or daughter/father would be breed together. Like I said I am not a breeder so I am clueless about this. Is this a normal? What are the pros/cons of breeding mother/son or father/daughter?