snappy central americans

[jessesgirl]

I recently purchased two C.A. Boas, from different breeders, at different times. Anyway, both are very bitey, and will strike without hestitation. Both are young, one a yearling, the other born 6-04. Is this just a characteristic of C.A.'s? All husbandry is well within norm's and they get fed weekly on the correct size rat . I'm disturbed by this, and committed to the snakes, so I need to know if I should always expect this, or can they be "re-trained" ? Thanks in advance.