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The Gombe chimps are named using the first letter of their mother's name. Chimp Week concentrates on the 'F' and 'G' families with Fifi and Gremlin at the top of their family lines.

Chimpanzee communities can number up to 150 individuals, but rarely all come together as a single group. Instead, they live in an ever changing 'fission-fusion' social system, moving around in family, mixed sex or bachelor groups – or even alone.

Females tend to migrate to neighbouring communities at puberty, though at Gombe about 50% stay in their natal groups.

Find out more about chimp behaviour and about the conservation issues facing these and other great apes through the links from the character profiles above and from the series page on Apes in Danger.