1.2. Chimpanzees and humans are alike in many ways. A baby chimp laughs when its mother tickles it. After
chimpanzees fight, they kiss and make up. When one
chimpanzee comforts another, it gives it a hug or pat on the
back. There are, of course, many ways that chimpanzees
and humans are different. Chimpanzees are smaller and
stronger than humans. An adult male chimpanzee stands
three or four feet tall and weighs about 100 pounds. But a
chimpanzee can lift more weight than a man who is six feet
tall.