incisor

Updated: May 14, 2025

The incisor teeth are six in number in each jaw, and are placed opposite to each other. In the lower jaw, the pincers, or central teeth, are the largest and the strongest; the middle teeth are somewhat less; and the corner teeth the smallest and the weakest.

William Youatt - The Dog

Up to the fifth year, the age of the horse or ox can be easily determined by the eruption and replacement of the incisors. At one year of age the colt has a fully developed set of temporary incisors. The ruminant's incisors at this age all show wear. The two-year-old colt shows a well-worn set of incisor teeth, and the ruminant at this age has replaced the nippers or centrals.

D. V. M. R. A. Craig - Common Diseases of Farm Animals

In a strictly natural classification these animals would not come together, since many of the species are unlike the others both in appearance and habits; but in a scientific point of view the absence of incisor teeth has caused them to be ranged together in a group, known as the edentata, or toothless animals.

Mayne Reid - Quadrupeds, What They Are and Where Found: A Book of Zoology for Boys

The most evident points in which Carnivora differ from Ungulata are their possession of at least four and frequently five digits, which always bear claws and never hoofs; all but the sea otter have six small incisor teeth in each jaw; the canines are large; the molars never show flattened, curved crests after the ruminant pattern, but are more or less tubercular, and one tooth in the hinder part of each jaw becomes blade-like, for shearing off lumps of flesh.

Various - American Big Game in Its Haunts

In one specimen, which is especially notable, two incisor teeth are replaced by a single tooth from a calf. This was grooved in such a way as to make it seem like two separate teeth. Guerini suggests a very interesting and quite unexpected source for this. While examining the specimen he wondered where the old Etruscan dentist had obtained a calf's tooth without a trace of wear on it.

James J. (James Joseph) Walsh - Old-Time Makers of Medicine: The Story of The Students And Teachers of the Sciences: Related to Medicine During the Middle Ages

The lips are rather thick, and the teeth generally very perfect and beautiful, though the dental arrangement is sometimes singular, as no difference exists in many between the incisor and canine teeth. The neck is short, and sometimes thick, and the heel resembles that of Europeans. The ankles and wrists are frequently small, as are also the hands and feet.

Edward John Eyre - Journals of Expeditions of Discovery into Central Australia and Overland from Adelaide to King George's Sound in the Years 1840-1: Sent By the Colonists of South Australia, with the Sanction and Support of the Government: Including an Account of the Manners and Customs of the Aborigines and the State of Their Relations with Europeans — Volume 02