What animal with only four extant species was the name borne by four ships of the Royal Navy
Hyena Hyenas or hyaenas (from Greek ὕαινα "hýaina") are any feliform carnivoran mammals of the family Hyaenidae . With only four extant species, it is the fifth-smallest biological family in the Carnivora, and one of the smallest in the class Mammalia. Despite their low diversity, hyenas are unique and vital components of most African ecosystems.
HMS Colibri Only one vessel of the Royal Navy has borne the name HMS "Colibri", after the "Colibri", a genus of hummingbird. There was to be a second vessel of the same name but she was never completed. The two vessels were: