Is there a hypernym for animal noises like "bark", "meow", "roar", et cetera?
Wikipedia calls them animal sounds.
sounds, as in:
Lion sounds include snarling, hissing, coughing, miaowing, woofing, and roaring. (Wikipedia)
The wikipedia article states that "a majority of them are onomatopoeia" (= not all of them are).
Josh's suggestion cry has merit
- The loud characteristic call of a bird or other animal
Imagining their hoots to be the cry of some dangerous animal, she had spent nearly two terrified days on the run from her rescuers.
The example clearly uses the word as a hypernym.
Some professionals refer to the sounds an animal makes as "vocalizations", perhaps to avoid the anthropomorphic terms pet owners and animal lovers tend to use. However, it's a bit stiff and fussy for most uses.
For scholarly examples, see http://www.unc.edu/~rhwiley/wildspectra/info/sounds.html http://epublications.marquette.edu/dissertations/AAI3172488/