More importantly, many dogs will display behavioral signs signifying the potential for aggression prior to the attack, Pit Bulls included. (onegreenplanet.org)
A high, tense wag could indicate a potential for aggression, while a low wag could indicate nervousness. (petpeoplesplace.com)
Behaviorists point out that a spayed pup could produce a bump in aggressive behavior, particular when there the potential for aggression is rooted in conflict. (herepup.com)