its back. don't do that or the chupacabra's going to get you. >> dr. canyon's blood-thirsty predator kills 28 chickens over a 15-month period, showing its face only once. >> it appeared to have a very large humpback. the legs looked like they could have been broken on the front. my first thought was, oh, my gosh, what is this. >> the animal officers briedel and carter catch on camera fits the same description. >> whoo! how crazy is that? >> we're following it, and she's just, oh, my god. oh, my god. >> here this thing is, and i get to be one of the persons that sees it alive in motion. it was pretty neat. >> the animal hams it up for the camera, turning its head to give the officers a better look at his other-worldly appearance. >> the side profile when i first saw it was different than anything i had ever seen. >> the snout was kind of elongated. the rear legs were longer than the front legs.