I've heard, and correct me if you know this to be untrue, that the spray for bears has a higher concentration of pepper or whatever. It also comes in a bigger bottle so it's less likely to be carried around for personal protection - something our northern neighbor, call it civilized enlightenment or experience, frowns upon. Something labeled as bear spray it isn't a problem at the border although I wouldn't recommend walking around T-Bay with it holstered.