The animal kingdom stretches anatomy far beyond human expectations. Some creatures carry organs that rival furniture in size, ...

You probably don’t think much about teeth until a dentist brings them up. But across the animal kingdom, tooth counts can get ...

Llamas are cute, but what makes them even better human companions is their gentleness and empathy. People from their native habitat, the Andes Mountains in South America, dub them “silent brothers”.

(CNN) — The sensitive interior of human teeth might have originated from a seemingly unlikely place: sensory tissue in fish that were swimming in Earth’s oceans 465 million years ago. While our teeth ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

Lower-jaw teeth in frogs re-evolved after an absence of 200 million years, a new study says. The discovery challenges a "cornerstone" of evolutionary thinking, according to experts. Of the more than 6 ...

Teeth of Cetacea, pp. 345-372, pll. lxxxvii, lxxxviiA, lxxxviii, lxxxix, lxxxixA., xci-xcvii (includes Sirenia). Pl. lxxxvii, narwhal, skull, two examples, male and ...

Teeth first evolved as sensory organs, not for chewing, according to a new analysis of animal fossils. The first tooth-like structures seem to have been sensitive nodules on the skin of early fish ...

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