A friend gave me what she called "pregnant alligator"

I don't have a clue as to what it's real name is, but I
*think* I might have some of them. Are the leaves/stalks
fleshy? Are the leaf edges serrated (not necessarily sharp
but with definite scallops)? If so, try looking at a website
of succulents and see if you can find it. If it's what I have,
then it's pretty common.

Tracey