List of animal sounds: Difference between revisions

|bleat,<ref>{{cite book|last1=Silverstein|first1=Alvin|last2=Silverstein|first2=Virginia|title=Nature's Champions: The Biggest, the Fastest, the Best|url=https://archive.org/details/natureschampions00silv_0|url-access=registration|page=[https://archive.org/details/natureschampions00silv_0/page/19 19]|publisher=Random House|year=1980|isbn=9780486428888}}</ref> hum<ref>{{cite journal|author1=Baotic, A. |author2=Sicks, F. |author3=Stoeger, A. S. |year=2015|title=Nocturnal "humming" vocalizations: adding a piece to the puzzle of giraffe vocal communication|journal=BMC Research Notes|volume=8|page=425|doi=10.1186/s13104-015-1394-3|pmc=4565008 |pmid=26353836}}</ref>