Bones are hard to digest and can be downright dangerous to eat, but some animals have evolved pretty bizarre adaptations to accommodate their crunchy, splintery diets.

Learn about efforts by conservationist groups to recover animals potentially in conflict with urbanization.

The goal is to remove and relocate tortoises from construction areas and enhance the long-term survivability of the threatened species.

Learn about efforts by conservationist groups to recover animals potentially in conflict with urbanization.

Find out how he came to live at Utah's Hogle Zoo over 30 years ago, and why he's in for a checkup today.

Learn about efforts by conservationist groups to recover animals potentially in conflict with urbanization.

The goal is to remove and relocate tortoises from construction areas and enhance the long-term survivability of the threatened species.

Learn about efforts by conservationist groups to recover animals potentially in conflict with urbanization.

The goal is to remove and relocate tortoises from construction areas and enhance the long-term survivability of the threatened species.

If you've never seen a scan of a tortoise before, definitely check this out.

Desert Tortoise (Gopherus agassizii) extreme closeup of face, suns itself in the Mojave Desert

Desert Tortoise (Gopherus agassizii) side view, eating foxtails during a drought year in the Mojave Desert.

Very Old, Very Large Desert Tortoise (Gopherus agassizii) side view, eating during a drought year in the Mojave Desert.

Desert Tortoise (Gopherus agassizii) side view, eating foxtails during a drought year in the Mojave Desert.

Very Old, Very Large Desert Tortoise (Gopherus agassizii) side view, eating during a drought year in the Mojave Desert.

Very Old, Very Large Desert Tortoise (Gopherus agassizii) rear view, walking in the Mojave Desert, side view.

Two young children, a boy and a girl watch a desert tortoise (Gopherus agassizii) eating alongside a trail in the mojave desert.

EF 605B - USA: TORTOISES