sabrina edwitt works in a per shop. she said that boa constrictors move slowly, and they are not usually aggressive. this boa is probably tame because it is used to being with people. "Baas aren't poisonous," she said. "they kill their prey by squeezing it to death. "boas don't have to eat very often. some boas can go a couple of weeks or a month without eating. "they usually eat rats and mice," said dewitt.