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The platypus was once dismissed by scientists as a fake stitched together from several animals

the gist

The platypus is an egg-laying, duck-billed, beaver-tailed mammal from eastern Australia and Tasmania, and it is one of only five living monotremes along with the four echidna species. It hunts in murky water with its eyes, ears and nostrils closed, using electrolocation to sense the tiny electrical signals of prey. The male also has a spur on each hind foot that delivers a painful venom, which makes it one of the few venomous mammals. When the first scientists examined a preserved body in 1799, they judged it a hoax made from several animals sewn together. Its odd mix of traits also makes it a key species for studying how mammals evolved.

how it works

Platypuses forage with their eyes, ears and nostrils shut. Their bill is packed with electroreceptors that detect the faint electric fields produced by the muscle movements of small crustaceans and insect larvae. The brain combines these signals into a map of nearby prey, so the animal can hunt effectively in dark water.

so what

The platypus shows that mammals were not a single neat family tree, since egg-laying and electrolocation survive in one animal. It is also a national symbol of Australia and holds cultural meaning for several Aboriginal peoples. Its IUCN status is near-threatened, and recent reports have urged a higher threat listing because of habitat loss.

fun fact

The platypus has no stomach, so its food passes straight from its mouth to its intestine.

more on this

key facts

Conservation status
near threatened
Scientific name
Ornithorhynchus anatinus
Started
9000000 BC

Facts: Wikidata (CC0)

Adapted from Wikipedia, the free encyclopedia · CC BY-SA 4.0

Image: Wikimedia Commons