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A nontoxic diamine, C4H12N2, formed in the putrefaction of the flesh of mammals and some other animals.

t.), a bone between the base of the lower jaw and the skull in most vertebrates below the mammals. In reptiles and birds it articulates the lower jaw with the skull; in mammals it is represented by the malleus or incus.

es (Anat.), two pairs of lobes, or elevations, on the dorsal side of the midbrain of most mammals; the optic lobes. The anterior pair are called the nates, and the posterior the testes.

An animal having four feet, as most mammals and reptiles; -- often restricted to the mammals.

igor of heat] (Physiol.), a form of rigor mortis induced by heat, as when the muscle of a mammal is heated to about 50ºC. -- Rigor mortis ( Etym: [L. , rigor of death] , death stiffening; the rigidity of the muscles that occurs at death and lasts till decomposition sets in. It is due to the formation of myosin by the…

An order of mammals having two (rarely four) large incisor teeth in each jaw, distant from the molar teeth. The rats, squirrels, rabbits, marmots, and beavers belong to this order.

Sexual desire or oestrus of deer, cattle, and various other mammals; heat; also, the period during which the oestrus exists.

anous, bony or horny pieces which form the covering of many fishes and reptiles, and some mammals, belonging to the dermal part of the skeleton, or dermoskeleton. See Cycloid, Ctenoid, and Ganoid. Fish that, with their fins and shining scales, Glide under the green wave. Milton.

The principal bone of the shoulder girdle in mammals; the shoulder blade.

Any large marine mammal, as a seal, walrus, or cetacean.

Any aquatic carnivorous mammal of the families Phocidæ and Otariidæ.

mice, but they have a longer and more pointed nose. Some of them are the smallest of all mammals.

An order of large aquatic herbivorous mammals, including the manatee, dugong, rytina, and several fossil genera.

A mammal having a single hoof on each foot, as the horses and asses; a solidungulate. [Written also solipede.] The solipeds, or firm-hoofed animals, as horses, asses, and mules, etc., -- they are, also, in mighty number. Sir T. Browne.

The blubber of whales or other marine mammals; also, the fat of the hippopotamus. Speck falls (Naut.), falls or ropes rove through blocks for hoisting the blubber and bone of whales on board a whaling vessel.

zona; -- applied to a membrane between the zona radiata and the umbilical vesicle in the mammal embryo.

An animal that suckles its young; a mammal.

g them) which connects the base of the lower jaw with the skull in most vertebrates below mammals.

A genus of nocturnal lemurine mammals having very large eyes and ears, a long tail, and very long proximal tarsal bones; -- called also malmag, spectral lemur, podji, and tarsier.

An order of extinct Mammalia found in the Tertiary formations.