Please help. My 1yr 3month old female bull terrier has nipped at and hurt my two little girls (now 5yr old and 3 1/2 yr old) since we have had her this past year. When she was tiny it wasn't as big of a deal and we felt she would grow out of it. Now however, she weighs 45lbs and she jumps up and gets their arms, legs and even face. She doesn't do it as much when my wife and I are around. However, if we leave her unattended she does it. She isn't growling and being mean but instead it seems she is playing. We have tried to keep her from doing this and we do not encourage rough play. My wife witnessed her do the same with a neighbor's dog and my wife said it wasn't like anything she had ever seen. It is her high prey drive I guess but I don't know what to do at this point. We are at a point where we are probably going to have to give her away unless some kind of magic tips or training comes along. Any ideas?