Object: a snail, or a turtle, or a crab. (Pictures of any of these animals, or stuffed toy representations work better than the real thing)

Good morning, boys and girls: I have a question for you: which animal carries its home around on its back? There are a few of them, aren't there? The snail carries its home around on its back. So do turtles and crabs. Whenever a snail, or a turtle, or a crab is frightened by som…