Some cats species can purr and others roar but none do both.
It was thought that the characteristics of the hyoid bone determine which cats can roar as all the roaring cats:
- lion (Panthera leo)
- jaguar (Panthera onca)
- tiger (Panthera tigris); and
- leopard (Panthera pardus)
share the same hyoid bone structure.
However, turns out the snow-leopard (Panthera uncia) also shares the same hyoid bone structure, but does not roar but purr.
Back to the drawing board I guess.
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