Chimpanzee
Chimpanzees were a species of intelligent, but not sentient Earth primate. They were the closest biological relatives of the Human species.

When Doctor Phlox attempted to compare the DNA from a Xindi-Reptilian to a Xindi-Primate in 2153, he noted that the Primates' genetic profile was nearly identical, but not quite the same, as the Reptilians'. Despite this, he noted that their base pair sequence were significantly closer to each other than the base pair sequence of a Human and a chimpanzee. Phlox then agreed with Jonathan Archer that a closer analogy between the Primate and Reptilian might be a Human and a Neanderthal. ()

In the daring plan to steal the  to rescue Spock from the , Scotty automated the ship in such a way that "a chimpanzee and two trainees could run her." Upon hearing this description, Kirk thanked Scotty and noted that he would not "try not to take that personally." ()

External link 
 
Earth animals