I believe It's a "Troop"
Alouatta palliata is the most often used scientific name for the black howler monkey.
it depends on the species
Howler Monkey's have been known to be very loud, they may be the loudest in a specific zoo that contains Howler Monkey's but I am unsure about the general loudest animal in the zoo.
capuchin is one of them. more- howler monkey, spider monkey etc.
A howl hence the name howler monkey. It us extremely loud.
Howler Monkeys
it is called an infant just like humans
The howler monkey gets its name from the loud, sustained howling noises they make to communicate with one another. Their vocalizations can be heard up to 3 miles away in the dense rainforest, making them one of the loudest land animals.
There are no monkeys beginning with "A", but there are other primates such as the aye-aye.
The scientific name of the drill monkey is Mandrillus leucophaeus.
The scientific name for the Russian monkey is Macaca sylvanus.
The scientific name for the purple faced leaf monkey is Trachypitnecus Vetulus