9. Gibbons We were able to listen to the sounds they produced and the swelling of their throat.
10. Gibbons In this picture you can see the swelling of his throat. Each one produced a different sound, it’s territorial.
11. Langers It was difficult to obtain a good picture of them they moved very quickly!
12. Emperor Tamarin I wasn’t able to spot this one but I thought it was interesting that it is named after an Austrian emperor that had a similar mustache. They live in Brazil and Peru and weigh less than a pound.