Word Origin and History for semi-Expand before vowels sem-, word-forming element meaning half, part, partly; partial, imperfect; twice, from Latin semi-half, from PIE *semi-half (cf. Sanskrit sami half, Greek hemi-half, Old English sam-, Gothic sami-half).
Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, hamsters, gerbils and capybaras. Other animals such as rabbits, hares, and pikas, whose incisors also grow continually, were once included with them, but are now considered to be in a separate order, the Lagomorpha.
Deer are the mammals that form the cervidae family. This family includes the red deer, fallow deer, moose, white tailed deer, reindeer, roe deer, elk and the chital. The entire species of deer are responsible for growing new antlers every year while shedding the old ones. The deer depending on the species can weigh up to 1000 lbs and have solid bodies that are long.