I have a feeling this little character could be popping up all over the place. The possibilities are endless.
Now, I want to make more monkeys! The pattern is Jacobus, available through Ravelry (not free, but well worth the price of $5.00US). The yarn is some kind of sock yarn that was in my stash, without a label. The pattern can be made using any weight of yarn; you just have to choose a needle size that will give you a firm fabric. Because I was using sock yarn, I used 2.25 mm needles.
Incidentally, the picture on my iPod is of Trinity and Ethan, who had been eating raspberries right off the bush. It is, essentially, a photo of two monkeys. ;)