- UMLS:C0021156 (ncithesaurus:Incisor)
Humans normally have eight (8) incisors; Among other animals, some other primates, cats and horses have twelve. Rodents have four, while Foxes have nine. Rabbits and hares (lagomorphs) were once considered rodents, but are distinguished by having eight - one small pair, called 'peg teeth', is located directly behind the most anterior pair. Incisors are used to bite off tough foods, such as red meat
Incisors are the first kind of tooth in heterodont mammals. They are located in the premaxilla above and mandible below. [WP,unvetted].