I took a lot of pictures of tamarins—and some other animals—in the small-mammal house, and while most of them did not turn out well at all (animals that move quickly in poorly lit areas do not lend themselves to crisply focused photography), there were a few I was happy with.
1. Portrait (the Albert Einstein look):
2. The Noble Pose:
3. Portrait (the Animal-from-the-Muppets look):
4. And finally, a meerkat being pious, or maybe checking for rain: