Animals

The guinea pig's body temperature ranges from 38.6-39.4 degrees Celsius.

It belongs to the genus Elephas and is its only existing species.

A characteristic feature of crustaceans is two pairs of feelers, and three pairs of mouth legs, and all but the first pair of feelers are two-branched (they separate into exopodite and endopodite).

Their natural predators are birds of prey, foxes, bobcats, opossums, weasels, and skunks.

They are very social, probably this helps them avoid predation.

The viper dogfish feeds primarily on bony fish, which it impales on the fang-like teeth.

Malaysian trumpet snails spend most of the day buried under the substrate.

They are active during the day.

During breeding, the color of the gray heron's beak becomes more intense.

Until the 1830s, many naturalists believed that Pterodactylus were marine amphibians that used their wings as flippers.