Bite, Biter, Bitest

We want to pick Triheads with particular properties. Right now, we need the most aggressive of them! We have created a device that gauges aggression levels. Setting it up in the right place and luring a Trihead to it is enough — if it fits the criteria, it will be teleported right into the laboratory!
Unfortunately, they might leave quite a few bites on you while you're busy luring them in! So... be careful, {username}!

Well, are they biting real bad? They even got one of my prosthetics torn loose, once!

Oh, such fine specimens! They're trying to eat through the cage's bars now! Furious beasts as they are! We will grow real monsters out of them!