I know pronghorn drop their horns by the end of November, but when do pronghorns start growing new horns and when is horn growth complete?

Answered by Idaho Fish and Game biologist Pronghorn are quite a unique species. They grow horns that shed annually unlike other species that grow horns that get larger each year like bighorn sheep and mountain goats. Horns are different than antlers. Horns are made from a keratinous sheath that grows from a core of live…

Do turtles have backbones?

Answered by Alana Jensen, Environmental Educator, INL ESER Program Turtles and tortoises are the only reptiles with tough, bony shells. The shell has an outer layer of scutes made of hornlike material called keratin and an inner layer of bony plates. There are two parts to the shell of a turtle: the upper portion is…