I’m going to describe a creature, and you have to try and guess what it is, based on the following three clues: 1) it lays eggs; 2) it has venomous claws; and 3) it uses electroreception to assist it in catching prey under water. You probably guessed some sort of reptile, right? Wrong. Ok, so those questions were a bit tricky. I’ll give you another three clues: 4) it’s semi-aquatic; 5) it has thick fur; and 6) despite laying eggs, it suckles its young on milk. Some of you will probably have worked out what this mysterious animal is by now. I am, of course, describing Ornithorhynchus anatinus, or as it is more commonly known, the platypus.
Growing up in Australia, I was fascinated by the native wildlife. As a curious 7-year-old recently emigrated from England, I tried to assimilate the unfamiliar Antipodean fauna into my limited understanding of the animal kingdom, largely through approximations: To me, the wombat was like a kind of stout, snub-nosed badger; sugar gliders were reminiscent of squirrels; and the echidna was a larger and longer-nosed version of the hedgehog. Kangaroos were a more difficult species to accommodate, with a face similar to a deer, and the hind legs of some sort of giant Alice-in-Wonderlandesque rabbit. But my system completely fell down when it came to the platypus. This creature was truly weird, a kind of animal cut-and-paste that defied all of the categories that I tried to fit it into. As it turned out, I wasn’t alone in my estimations of this remarkable and unique creature.
As an Australian native, the platypus has been known in Aboriginal culture for millennia – but it was not until 1797 that Europeans first encountered them. Captain John Hunter of the Royal Navy sent a pelt and a sketch back to Britain in 1798,  but the bizarre appearance of the creature baffled European naturalists. Some considered it to be an elaborate hoax, and Scottish zoologist Robert Knox believed the creature to be the work of an inventive Asian taxidermist. Even George Shaw, the first man to scientifically describe the platypus, admitted that “a degree of scepticism is not only pardonable, but laudable … I almost doubt the testimony of my own eyes.” 
Whilst it makes perfect sense that European observers would find the platypus strange, having never encountered anything like it in the Northern hemisphere outside of the bizarre chimerical creatures of mythology, it is perhaps more surprising that Aboriginal Dreamtime legends also describe the platypus as a peculiar exception within the animal realm. Known as the ‘mallangong’, tambreet’ or ‘duliawarung’ to local indigenous peoples, Aboriginal story-telling traditions use myth to explain the unique appearance and behavioural characteristics of the platypus. The platypus was believed to be the offspring of a mother duck and a father water rat, accounting for its unusual characteristics – inheriting the duck-bill, webbed feet and egg-laying abilities of their mother, and the thick fur, claws and four legs of their father. In an origin story of the platypus from Northern New South Wales, their poor mother Gaygar is ostracized by the other ducks because of her bizarre-looking hatchlings, and is forced to leave her home on Narran Lake. She takes her babies up into the Warrumbungle mountains, thereby accounting for why platypus are only found in particular regions. In another story from the New South Wales Central Coast, the animals argue amongst themselves about who is the most important creature. They form three exclusive groups, all convinced of their superiority: The animals with fur who can run across land, the birds who lay eggs, and the water creatures who can swim. All of the groups want the platypus to join them, since he shares characteristics with all of them, and each faction invites him to be part of their group. After thinking about this for some days, the platypus gathers all the animals to tell them his decision:
I don’t have to join anyone’s group to be special because I am special in my own way. Because I have fur and love to run across the land, I have a little bit of animal in me. I also have a little bit of bird in me because of my bill and the fact that my wife lays eggs. As well, I also have a bit of water creature in me because I love to swim and explore the underwater world. […] I don’t know why the ancestors have made us all different, but we must learn to accept these differences and live with each other. 
All of the animals listening, including people, agreed that the platypus was very wise; and the people decided that they would not hunt the platypus because he was so special. Non-human animal hybrids of Eurasian mythology have also often been considered special, such as the Griffin, which combined features of the lion and eagle, both of which were regarded as especially regal animals.
Animal-hybrids from diverse mythological traditions demonstrate the significance of animals within human culture, playing an important role in origin stories and cosmology, as well as in defining what it is to be human. In the Aboriginal story above for instance, the strange ‘hybrid’ character of the platypus reminds us to accept and learn from our differences. To early European observers, the platypus must have seemed like the ultimate foreign creature, an almost perfect embodiment of mythical animal-assemblages such as the Chimera, a fire-breathing, androgynous, composite creature of ancient Greek legend that had the head and body of a lion, a snake for a tail and the head of a goat emerging from its back. But the platypus does not merely look like an odd melding of different species; recent scientific research has revealed that the platypus also has a very complex genetic lineage. Studies on platypus venom, which is secreted from a gland in the male’s hind legs and delivered by a ‘spur’, or hollow claw-like structure, have shown that their venom contains 80 different toxins, which share genetic similarities to poisons produced by snakes, lizards, spiders, starfish and sea anenomes, as well as containing 3 proteins that are unique to the platypus.  Despite these genetic similarities, this research suggests that platypus venom is an example of convergent evolution, whereby similar traits in different genetic lineages can arise independently due to similar environmental pressures. The eye, wings and fins are all examples of convergent evolution. Thus it seems that whilst the platypus appears to closely resemble a range of other species – both on the surface and genetically – it is nevertheless a uniquely adapted and very special creature indeed.
 Helen F. McKay, Pauline E. Jones, F. Francis & June E. Barber: Gadi Mirrabooka: Australian Aboriginal Tales from the Dreaming. Libraries Unlimited (2001), pp. 57-60 & 83-85.