A herd of buffalo. One of the best known collective nouns for animals. bull: cow: Mammal: Buffalo, buffalloes, buffaloes: Cat kitten: A clutter of cats, a clowder of cats, a glaring of cats, a kindle or litter of kittens. Household pet collective nouns for animals: tom, tomcat: tabby, queen: Mammal: Cats: Camel calf, colt