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Crocuta crocuta photo © David W. Siu                             Virtual ranking in the spotted hyena Political complexity in the spotted hyena is comparable with...

Crocuta crocuta photo © David Bygott   Anatomical conundrum of spotted hyena The peniform clitoris of the spotted hyena is unique among mammals in its tubular form and function....

Equus quagga quagga photo © Frederick York Extinct quagga a dark horse at several levels The extinct quagga was mainly brown, offset by whitish forelegs. This contrast suggests...

Crocuta crocuta photo © NH53 Achilles' heel of a killing cursor The spotted hyena is specialised for cantering in the open, with endurance unrivalled by any other terrestrial...

Equus quagga burchellii, artificially bred phenotype with minimal striping, photo © The Voice of America Perversion of bids to re-breed extinct quagga The quagga was the...

Crocuta crocuta photo © David Bygott   Pseudopenis of spotted hyena is a penis in form but not in function The difference between anatomical origin and evolved application is...

Equus quagga quagga photo © Frederick York Extinct quagga as a non-consorter Unlike all other subspecies of the plains zebra, the extinct quagga probably did not consort...

Gulo gulo photo © Tambako The Jaguar Subconscious photographic challenge of wolverine The wolverine has been photographed surprisingly frequently for such a rare and inaccessible...

Crocuta crocuta photo © bzd1 Aquatic affinity of spotted hyena The spotted hyena sometimes emulates crocodiles in caching and retrieving food at the bottom of pools. This...

Canis familiaris dingo photo © PartnerHund.com Dingo cannot logically be descended from wolf The dingo, although not fully wild, is classified as a subspecies of the wolf. This...

Hyaena hyaena photo © Spencer Wright  Striping makes even a hyena photogenic The striped hyena has been photographed surprisingly frequently for such a rare, shy and inaccessible...

Crocuta crocuta photo © Bernard Dupont Eye-catching neckline in spotted hyena The immature spotted hyena has a spotless patch on the side of the neck which is crisply defined by...

Crocuta crocuta photo © Yathin S Krishnappa Remarkably puny rather than massive jaws of spotted hyena Crocuta crocuta photo © Marieke Kuijpers What is remarkable about the...

Crocuta crocuta photo © Steve Jurvetson Clitoris and udder in spotted hyena signify social inferiority The female spotted hyena is unique in that both a peniform clitoris and an...

Musca vetustissima © imisstony Natural source of filth for an Australian fly Australia is the only continent on which a faeces-dependent fly is an abundant nuisance in areas...

Crocuta crocuta photo © Kate Shaw Yoshida Colour-coded cuteness to the maternal spotted hyena Crocuta crocuta photo © René Mayorga Colour-changes with age in the spotted...

Wildebeest (Connochaetes) © Paul Mckenzie Meta-shading for self-advertisement in wildebeests Links to the images that inspired this bio-insight: http://www.wildencounters.net/...

Crocuta crocuta photo © Tom Harkins Mammary bounty reveals maternal failure in spotted hyena It is easy to assume that those individuals of the spotted hyena photographed with...

Crocuta crocuta photo © AindriúH Habitat specialisation by spotted hyena for treeless grassland The spotted hyena is, worldwide, the only large carnivore specialised for treeless...

Canis familiaris photo © Sofia Olsson The domestic dog is descended not from the wolf – which never features the black-and-tan pattern – but from an extinct and unnamed ancestral...

Acinonyx jubatus  photo in the Public Domain Acinonyx jubatus photo © Ashleyflashley  The melanistic colour-morph of the cheetah is vaguely reminiscent of the leopard, but with...