en
David Attenborough's Natural Curiosities - S02E09
"Strange Parents" asks how we usually recognise animals as either male or female and how each sex normally plays a particular role in their own life cycle. However both hyenas and seahorses completely break the gender rules.
More informationEpisodes
David Attenborough's Natural Curiosities - Season 1David Attenborough's Natural Curiosities - S01E02
David discovers the curiosities that have led to accusations of forgery but have ultimately helped us rethink evolution. When early explorers brought the first specimen of a duck-billed platypus back to England in 1799, it was thought so bizarre it was deemed a hoax, while the midwife toad became the centre of a raging scientific storm in the 1920s that led to accusations of fakery.
David Attenborough's Natural Curiosities - S01E03
David Attenborough's Natural Curiosities - S01E03
David encounters two examples where Nature has tinkered with the aging process to alarmingly different effect – the first grows old while trapped in a young body while the second looks old from birth but might hold the key to a long life.
David Attenborough's Natural Curiosities - S01E04
David Attenborough's Natural Curiosities - S01E04
The single spiral tusk of the narwhal inspiration for tales of unicorns and the myriad variations on the twist of the snail shell have delighted and fascinated naturalists and artists since the dawn of civilization.
About show
"Strange Parents" asks how we usually recognise animals as either male or female and how each sex normally plays a particular role in their own life cycle.
However both hyenas and seahorses completely break the gender rules.