Assertion: howler monkey | /r/CapableOf | sleep each other
Facets:
Source sentences:
text: Howler monkeys move in troops of around 18 howler monkeys and spend most of their time sleeping and grooming each other.
text: They live high in the trees and hang from branches by their tails who tend to move in troops of about 18 monkeys deep; spending most of their time sleeping and grooming each other.