Chickens
“ Scientists have at last uncovered the closest living relative of the mighty Tyrannosaurus rex, the most feared and famous of all the dinosaurs. For the first time, researchers have managed to sequence proteins from the long-extinct creature, leading them to the discovery that many of the molecules show a remarkable similarity to those of the humble chicken.”
I have had young roosters and they hunt as a pack, more similar to Velociraptors as shown on Jurassic Park then T. Rexes, chasing my dog away to get at his food.