Monkeys
* Tails: Most monkeys have tails, which they use for balance and sometimes for communication.
* Size: Generally smaller than apes, although there are exceptions.
* Locomotion: Primarily quadrupedal (walk on all fours), although some can brachiate (swing through trees) or move bipedally (on two legs) for short periods.
* Habitat: Mostly live in trees, though some species are terrestrial.
* Examples: Capuchin monkeys, macaques, baboons, marmosets, squirrel monkeys.
Apes
* Tails: Apes do not have tails.
* Size: Generally larger than monkeys, with the largest primate species (gorillas) belonging to this group.
* Locomotion: Mostly knuckle-walking (walk on knuckles) or bipedal (walk on two legs), although some are arboreal (live in trees).
* Habitat: More diverse habitats, including forests, grasslands, and mountains.
* Examples: Chimpanzees, gorillas, orangutans, gibbons, bonobos.
Key Differences:
* Tails: The most obvious difference is the presence of a tail in monkeys and the absence of a tail in apes.
* Size: Apes tend to be larger and heavier than monkeys.
* Locomotion: Apes have a more diverse range of locomotion, including knuckle-walking and bipedalism, while monkeys are primarily quadrupedal.
* Intelligence: Apes generally have larger brains and are considered more intelligent than monkeys.
It's important to note that these are generalizations, and there are exceptions within both groups. For instance, some monkeys have shorter tails, and some apes are smaller than certain monkey species.