Letโ€™s see:

Ancient, egg-laying, poisonous, web-footed, beaver-tailed and duck-billed.

Itโ€™s got to be theย Platypus, and itโ€™s got to be one of the strangest animals on earth.ย  Hereโ€™s a bit of a closer look.

The bizarre appearance of this egg-laying, venomous, duck-billed, beaver-tailed, otter-footed mammal baffled European naturalists when they first encountered it, with some considering it an elaborate fraud.

A historical illustration of a platypus, showcasing its distinctive duck-billed and beaver-tailed features, swimming with its webbed feet visible.
Illustration from the first scientific description in 1799

Native only to Eastern Australia, this endemic species checks all sorts of boxes for oddities.

It is one of the fewย venomous mammals, the male platypus having a spur on the hind foot that delivers a venom capable of causing severe pain to humans.

A platypus swimming in clear water, showcasing its distinctive duck-bill and beaver-like tail.
Image by Charles J. Sharpย  via Wikimedia.
A close-up image of a platypus, showing its unique duck-bill and fur. Icons around the platypus indicate its characteristics: egg-laying, venomous nature, and the ability for electrolocation.

The newly hatched young are vulnerable, blind, and hairless, and are fed by the motherโ€™s milk.

Although possessing mammary glands, the platypus lacks teats. Instead,ย milk is released through pores in the skin. There are grooves on her abdomen in which the milk pools, allowing the young to lap it up. (Umโ€ฆwhoa!)

Two young platypuses being held in hands, showcasing their unique duck-billed and beaver-tailed features.
Photo taken by Faye Bedford & supplied by Dr T. Grant.

Poisonous Mammal?

While both male and female platypuses are born with ankle spurs, only the male has spurs which produce a cocktail of venom, composed largely of defensin-like proteins (DLPs), three of which are unique to the platypus.

The defensin proteins are produced by the immune system of the platypus. Although powerful enough to kill smaller animals such as dogs, the venom is not lethal to humans, but is so excruciating that the victim may be incapacitated.

Close-up of a male platypus showing its venomous spur, highlighting its unique anatomical features.
Close-up of the platypus ankle spur, which can inject venom.

The Platypus is one of only a handful of monotremes. Monotremes are the only mammals known to have a sense ofย electroreception: they locate their prey in part by detecting electric fields generated by muscular contractions.

The platypusโ€™ electroreception is the most sensitive of any monotreme.

Existing only in Australia and Tasmania, the Platypus has risen in stature to become a mascot at sporting events, and even lives on Australian currency.

While not currently endangered, the species is considered near-threatened, as habitat destruction negatively affects its population.

Illustration of a platypus featured on a safety matches packaging, with a colorful background depicting waves and grass.
A vintage postage stamp featuring a platypus beside a body of water, with text 'AUSTRALIA' and '9d POSTAGE'.

We love nature’s extreme oddities, like the Platypus, which has fascinated humans ever since it was discovered.

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1 Comment

  1. Maria Smith

    Great article about one of my favorite animals.
    Just one thing, though. Poisonous and venomous are two different things so the terms are not interchangeable.
    Poison has to be ingested. Venom is injected.

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