let's look at it from another perspective , in most cases cold blooded critters do not look at things as irritants and in most cases not protecting real estate (except for the spawn ), the 3 basic things cold blooded fish and animals have going on are , feed , flee or make some lil ones .
now if it resembles a prey item it might get bit and, if it resembles a predator and there is no clear path to escape it might get bit ,and of course if it resembles a mate it might even get a little nip there too ....
as humans we try to put our perspective on how cold blooded wildlife reacts and thinks about their realms and it really has about zero in the same thought process dept. going on , they lead a very simple life without much in the way of thinking out what they do before they do it .