The dino mode's head has five horns (three on the head/face and two on the lower jaw). Last time I checked, Triceratops has three horns. Does this make Slug a Penteceratops? Also, the mouth is full of sharp teeth, despite the fact that Triceratops was a herbivore.
The movie Dinobots appear to be mutant dinosaurs, as Swoop has two heads, the animation model of Scorn (Spinosaur) has three rows of spines, and Slug has several horns and teeth.