Monkeys in general, including proboscis monkeys, are not designed to fend off predators. Instead, they live in the trees where most predators can't access them. In the case that they were attacked by a predator that could get to them, they would flee rather than fight.
Also they have certain noises like a screech or honk that warn others.
yes, proboscis monkeys have stronger hind legs.
the proboscis monkeys live in swamps in Asia
Yes. The proboscis monkey is assessed as endangered in the IUCN Red List of Threatened Species.
they are not extinct yet.
they do have flat fingernails
They eat leaves and Fruit They also have the ability to digest poisonus food.
they group themselve
The male Proboscis Monkey is not only one of the largest monkeys in Asia but they are also one of the Proboscis Monkey Reproduction and Life Cycles.
yes they do hold hands
yes fool
because humans are like monkeys
Monkeys growl when they are angry or trying to protect themselves. Some also use it as a way of warning other monkeys of potential threats.