Chimpanzee Behaviours

• We can find Pan or Pan Troglodytes in West and Central Africa.
• The Bonobo or Pan Paniscus are found in Democratic Republic of Congo.

Current research

• rule out 31.   and biological factors.
• learn through 32.   of other chimps' behaviour.

Discoveries

• The book The third Chimpanzee by James Diamond discusses some physical features of chimpanzees.
• The discovery reportes by Jane Goodall suggests that chimpanzees know how to use 33.   .

Chimpanzees in Senegal

• Use spears sharpened with their teeth.

• Can 34.   the shell of the coconut.

• Use a 35.   hammer to crush nuts.

• Are capable of learning 36.   and understanding human language.

Sub-species

• Bonobos live on the other side of 37.  .
• Both of them are reducing alarmingly in population 38.  .