A eutriconodont, it is known from the Cedar Mountain Formation, and is both a large sized and possibly ecologically specialised taxon, showcasing the diversity of mammals in the Mesozoic.

The species is most distinctive in regards to its large size, being among the largest mammals in the region, some lower molars exceeding 5 mm in length and with an estimated body weight of about 750 g. The medial lower incisor is greatly enlarged, with a mitten-shaped crown that bears sharp cutting surfaces.

[1][2] Always recognised as a triconodontid eutriconodont,[1] the most recent phylogenetic studies recover Jugulator as the sister taxon of a clade comprising Volaticotherium, Ichthyoconodon, Triconolestes, and Argentoconodon, known as Volaticotherini.

[1] Combined with the general adaptations for carnivory that eutriconodonts display, it is safe to say that it was a predator of other vertebrates like mammals, lizards and small dinosaurs.

Other large eutriconodonts like Repenomamus and Gobiconodon show evidence of scavenging and direct predation on such creatures, so it is likely that Jugulator also displayed these behaviours.