Assertion: howler monkey | /r/HasProperty | about the size of cocker spaniels
Facets:
Source sentences:
text: The smaller the size of the testes in a howler monkey species, the larger the size of the animal's hyoid bone, a structure that enables the monkeys to make deep, booming calls — noises on a par with those of a tiger, though howler monkeys are only about the size of cocker spaniels.