View an animation about use of termite sticks in chimpanzees. Then read an overview of tool use in animals and articles about tool use in chimps and gorillas.

Animation: Tool use in Chimpanzees

Tool Use in Chimpanzees (549.0K)

Overview: Tool Use in Animals

http://www.pigeon.psy.tufts.edu/psych26/tools.htm

Think about: Why are observations of tool use more common in captivity than in the wild?

Chimps Shown Using Not Just a Tool But a Tool Kit

http://news.nationalgeographic.com/news/2004/10/1006_041006_chimps.html

Think about: Why is it significant to discover that chimpanzees use multiple tools for a single task?

First Observation of Tool Use in Wild Gorillas

http://biology.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pbio.0030380

1			Given what we know about tool use in other primates, why are we so sure that hominins used tools? What selection pressures might have favored the evolution of tool using behavior in all of the hominoids? Provide a few scenarios.