On May 17, 2005, a female chimpanzee in near the Fongoli stream in the savanna of Senegal was observed using a spear to hunt a bush baby (a tiny primate that lives in trees). Researchers reported the chimp, Tumbo, sharpened a branch with her teeth and held it like a spear in her hand. She rammed the spear into a hole in a tree trunk, where a bush baby was cowering. Tumbo then cracked open the trunk and ate the animal.
 
Chimpanzees had long been observed creating and using tools, most famously shedding leaves from thin branches to “fish” for termites underground. Apes had also been observed in organized hunts for other animals. Tumbo, however, was the first chimpanzee seen using a tool to hunt another animal. This behavior was previously only observed in human beings.
behavior
Noun

anything an organism does involving action or response to stimulation.

bush baby
Noun

small mammal (primate) native to Central African forests.

chimpanzee
Noun

large, intelligent ape native to Africa.

hunt
Verb

to pursue and kill an animal, usually for food.

observe
Verb

to watch.

previous
Adjective

earlier, or the one before.

primate
Noun

type of mammal, including humans, apes, and monkeys.

savanna
Noun

type of tropical grassland with scattered trees.

spear
Noun

weapon made of a long metal or wooden shaft with a sharp, pointed end.

Noun

body of flowing water.

termite
Noun

small insect that feeds on wood.

tool
Noun

instrument used to help in the performance of a task.

trunk
Noun

main shaft or stem of a tree.

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