yowl

(noun) a very loud utterance (like the sound of an animal). Synonyms: bellow, bellowing, holla, holler, hollering, hollo, holloa, roar, roaring. Example: "His bellow filled the hallway."

(verb) cry loudly, as of animals. Synonyms: howl, wrawl, yammer. Example: "The coyotes were howling in the desert."

(verb) utter shrieks, as of cats. Synonyms: caterwaul.