a cackle of hyenas A group of hyenas. ConfidencehighAttestationwikipedia-cited, wiktionary-attestedAlso used formad scientists 5 sourcesWikipedia - List of animal namesZoological Society of San Diego - Animal group namesU.S. Geological Survey Northern Prairie Wildlife Research Center - Common Questions: What Do You Call a Group of...?Wiktionary - cackleWiktionary - Appendix:English collective nouns
a clan of hyenas Fanciful / unverified ConfidencelowAttestationwikipedia-uncitedAlso used forbadgers, gamers, humans 1 sourceWikipedia - List of animal names