Add Yahoo as a preferred source to see more of our stories on Google. Shell integration typically involves 50 to 60 individual bones fusing into a permanent structural cage. The carapace creates a ...

In cartoons, when a turtle is spooked, it retreats into and closes up its shell. While used for comic effect, this imagery is based in fact — although not all turtles are capable of this protective ...

If you liked this story, share it with other people. The forest hinge-back tortoise is an unusual animal whose shell can swing down 90 degrees in the rear to protect itself from predators. However, ...