If you happen to be wandering the Mojave Desert and come across a desert tortoise, don’t poke around the critter too closely—you could end up covered with a surprise spray of artificial grape fluid.

Here’s something you might not know about tortoises: They have nerve endings in their shells, which means they can feel it when you pet them. If you don’t believe it, watch Redfoot wiggle around when ...

Turtles and tortoises, though sharing ancient ancestry and a protective shell, exhibit significant differences in habitat, morphology, and ecological roles. Aquatic turtles possess streamlined shells ...