Monkeys, apes and humans are mammals which fall ________
the primate category. Primates are ________ most intelligent group
of animals. To _______ their environment, they have characteristics
like forward ___________ eyes for judging distances and opposing
thumbs for ____________ things.
Gorillas live in ____________ lowland rainforests or high up in
the mountains. Gorillas are heavy in __________. They spend most
of their time on the __________ walking on their feet and fore limbs
knuckles. Although gorillas look big and fearsome, they _________
are vegetarians.
Orang utans, like gorillas and gibbons, are __________. They
are shy solitary primates. They are _______________ mainly in the
rainforests of Borneo and Sumatra in Asia. They ____________ all
their lives living on trees.