1960

InGoodall’sfirstyearofstudy,she observedDavidGreybeardeatinga deadanimal.Thiswasproofthat chimpseat meat.

1960

GoodallobservedDavidGreybeardmakingandusingatooltofindandeat termites.

1964

AchimpnamedFiganshowedplanningwhenhe“kidnapped”achimpnamedFlinttogettheotherstofollowhimtoanew location.

1964

AchimpnamedMikeshowedintelligencebyusingemptykerosenecanstocreatea noisy chargingdisplay.Hebangedthe canstogethertoscarelarger males.

1970

Thesightofawaterfallinspiredthe chimpstoperformajoyfuland spontaneous dance.

1974

Inashockingdevelopment,“war”broke outbetweentwogroupsofchimps.The warlastedfour years.

1975

Figan’sstatusasaleaderwas strengthenedbyhiscloserelationshipwithhisbrother,Faben.WhenFabendisappeared,Figanhada hardertimestayingon top.

1987

Afterthree‑year-oldMel’smotherdiedofpneumonia,hewas“adopted”by a femalechimpcalledSpindle.This wasthefirsttimethatanonrelatedchimpwasobservedtoadoptan orphan youngster.

1994

Theuseoftwigstocatchcarpenterantshadbeenseeninonlyonechimpcommunity.Afteronechimpleftthat communityforanother,shebeganteachingtheskilltochimpsinhernew community.

1995

Researchsuggeststhatsomechimpsswallowtheleavesofaparticularplanttohelpstopstomachpainorgetridof parasites.