The platypus (Ornithorhynchus anatinus) is a semi-aquatic egg-laying mammal native to eastern Australia and Tasmania, and one of only five surviving monotreme species in the world. It occupies freshwater rivers, streams, and lakes, where it forages along the bottom for invertebrates, detecting prey entirely through electroreception -- specialized receptors in its bill that sense the electrical fields generated by muscle movement in small animals like yabbies, worms, and insect larvae.
Listed as Near Threatened on the IUCN Red List, the platypus faces a combination of pressures that have caused its range and abundance to contract significantly over the past two centuries. Land clearing, altered water flows from dams and irrigation infrastructure, sedimentation, prolonged drought intensified by climate change, and entanglement in recreational fishing gear and opera house-style yabby traps all affect population health. A 2020 study published in Biological Conservation estimated that the species had declined by around 30 percent over the preceding 30 years and recommended upgrading its threat status, a consideration the IUCN continues to assess.
Yes, the platypus is a mammal, belonging to the order Monotremata alongside the four echidna species. Monotremes are the only mammals that lay eggs rather than giving birth to live young, and the platypus retains several reptilian traits, including a cloaca, that reflect its ancient evolutionary lineage.
Platypuses eat aquatic invertebrates, including freshwater shrimp, yabbies, worms, and insect larvae, which they detect along river and stream beds using electroreceptors in their bill. They have no teeth, so they store prey in cheek pouches and grind it with hardened keratin pads before swallowing.
The platypus (Ornithorhynchus anatinus) is a semi-aquatic, egg-laying mammal native to freshwater rivers and streams of eastern Australia and Tasmania. It is one of only five living monotreme species and is listed as Near Threatened on the IUCN Red List, facing pressure from land clearing, drought, and river damming.
Platypuses do not have nipples, so they secrete milk through patches of specialized skin on the mother's abdomen, and the hatchlings lap it up directly. The milk is expressed through pores rather than true sweat glands, but the process is functionally closer to seeping than sweating.
Male platypuses are venomous, delivering venom through spurs on their hind legs that can cause severe, lasting pain in humans and is capable of killing small animals such as dogs. The venom is produced in crural glands connected to the spurs and is used primarily during competition with rival males in breeding season.
Yes, platypuses lay eggs, typically a clutch of one to three leathery eggs incubated by the mother in a burrow for around ten days. As monotremes, they share this trait only with echidnas among all living mammals, according to the IUCN Red List species account for Ornithorhynchus anatinus.
No projects have listed this species yet. If you run a project that protects the Platypus, you can add it to Wildlife Connect.
