Well, he's not really a mammoth, he's an elephant. Or a miniature crochet interpretation of an elephant. He's fuzzy, though!
I haven't really crocheted anything other than blankets, scarves, or trims before, so I was a bit apprehensive about trying to follow a pattern (particulary as the US patterns use a different terminology to the English ones that I learned with). Still, a couple of imperfections aside, I'm really please with out he turned out.
The pattern is a free one from Lion Brand, and he's the Amigurumi Elephant (I'd link to the pattern, but you need to register - for free - to see it). If you're on Ravelry, you can check out the pattern (and other examples made) here. My project is right here.
The yarn I used is a merino/angora blend, from Naturally Yarns.