Thus, some regard Goodall's observations as distortions of normal chimpanzee behavior.

There are videos on chimpanzees and chimpanzee behavior that play on small kiosks.

In the 20th century, a new age of scientific research into chimpanzee behavior began.

Before 1960, almost nothing was known about chimpanzee behavior in their natural habitats.

It got to the point where even complex chimpanzee behavior could be taught in three minutes with a taper.

While chimpanzee behavior is instinctively oriented toward survival, human behavior is consciously so.

There is, however, a darker side to chimpanzee behaviour, just as there is in humans.

Many chimpanzees have suffered Godi's fate since 1974, and such violence is undoubtedly part of normal chimpanzee social behavior.

However, little was known about chimpanzee behavior or community structure.

These findings revolutionized our knowledge of chimpanzee behaviour.