|Refer to an animal as it, unless sex is known; generally avoid using who with animals.
As a general rule, for breeds of animals capitalize any part of the name
that derives from a proper noun:
a Boston bull
the Holstein cow
arctic hare, etc.
Names given to pets or wild animals
take initial caps and no quotes:
numbered groups or individuals:
group 817 herd 111
male 204 bull
Animal sounds and bird calls are italic, no quotation marks; for plural add roman s to the italic word and apostrophe:
the black-and-white male's dreo, dreo, dreo
mating call hoo's
high-pitched whoo-ing call
See also BREEDS, NAMES (section 4), SCIENTIFIC NOMENCLATURE.