Chimpanzees use sex tools

The definition of "tool" varies, but most scientists recognize objects as tools, in the case of inanimate objects outside the body of the user, if used to alter the environment in a way or have information about it, and if they are modified in any way in the function, form or position. Chimpanzees were first observed using tools of Jane Goodall in 1960 when she documented chimpanzees using blades of grass to extract termites, and chimpanzees are known to use a tool kit "of about 20 tools, and tools kit ranging from one colony to another.

Researchers working in Tanzania have observed male chimpanzees plucking and breaking the dried leaves, fragile in front of his visible erection, and the rough sound to attract the attention of a female. If she is interested, the behavior is followed by mating. The use of leaves in this way has not been seen in other groups of chimpanzees, but chimpanzees everywhere have been the tools and combinations of instruments in complex sequences to achieve its objectives, which may include food, social rituals, or in this case, sexual desires.

In an essay in Science, primatologist and professor of biological anthropology, Dr. William C. McGrew, University of Cambridge, described the latest discoveries about tool use in chimpanzees. He said that the leaves used by chimpanzees in Tanzania to the definition of a tool because chimpanzees are using an external object for a specific purpose, which is the interest of female chimpanzee in heat.