Chimps

American and Russian scientists utilized animals - mainly monkeys, chimps and dogs - in order to test each country's ability to launch a living organism into space and bring it back alive and unharmed.

Chimps can be extremely aggressive.

They found that not only do humans need less sleep than chimps, macaques and lemurs, we spend a greater percentage of our slumber in the deeper, more restorative stages of sleep.

Chimps are immensely strong.

Chimps are much stronger than humans.

Jo Setchell is a primatologist at Durham University in Britain. She studies primates, the group of mammals that includes gorillas, chimps, monkeys, gibbons, mandrills, and lemurs. And, of course, humans.

Sally Boysen has been studying chimpanzee cognition for over 30 years. A psychologist at Ohio State University, she has focused on chimps' ability to understand numbers and tools, their ability to recognize loved ones, and their seemingly altruistic natures. In the near future, she hopes to teach them to read simple English words. She also really loves her chimps.

Genetic experts say humans and chimps are ninety-eight percent related. A new study suggests that the development of humans from chimps may have been more recent than scientists have thought. And more complex.

Chimps are social animals.

We're just chimps with nukes.