It is considered more robust than the bonobo , weighing between 40 and 65 kg ( 88 and 143 lb ) and measuring approximately 1.3 to 1.6 m ( 4 ft 3 in to 5 ft 3 in ) from head to tail .
The common chimpanzee is more robust than the bonobo , weighing between 40 and 65 kg ( 88 and 143 lb ) and measuring approximately 1.3 to 1.6 m ( 4 ft 3 in to 5 ft 3 in ) from head to tail .