this is the default behaviour for animals attacking guests IF there's no attack animation.
Compare with other animals. Search in the UCA from the wold for 'attack' or something like that, search in another animal's UCA for something like 'cloud' of 'cld' .
I guess you'll figure out what to do if you understand the structure of those files, which is very easy.
(sorry to be this vague, it's been a very long time since I did this)
one hint: never ever use APE for 'programming' your animal.