I've had two female pit chows I raised from puppies and a stripped male pit bull already grown. He was just plain ignorant, although he never hurt people, babies included. He would kill anything else. The bigger pit chow had 30 puppies along the way, but her littlier sister had none. The lillier sister died about a year ago. The male was killed by a neighbors younger pit bull. Maybe it's strange, but I've taught the remaining dog not to kill, and resently I found a baby kitten which she let lay on her. Maybe motherly instinct. Little dogs squeeze through our gate and she allows them to come and go. One time she even ran to me with a little dog chasing her. She once had a poddle in her mouth in the air, and I hollered dror it and she did and ran to me. Her name because of her size is Big Mama, her sister Lil Bit, the male Chief. Yes you can train them but, you must start early, very early.