Welcome to the World of Platypus
Duck-Billed Platypus
Ornithorhynchus anatinus
Also known as: Platypus
Average lifespan: 10–17 years (up to 20 in captivity)
Primary habitat: Freshwater rivers, streams, and lakes
Geographic range: Eastern Australia and Tasmania
Overview
The duck-billed platypus is one of the most unusual mammals on Earth, combining traits from birds, reptiles, and mammals. It lays eggs, produces milk, and uses electroreception to hunt underwater. When first discovered, scientists believed it was a hoax made of stitched-together animals.
What It Looks Like
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Body length of about 17–20 inches
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Dense, waterproof brown fur
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Flat, duck-like bill made of soft tissue
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Webbed feet and a broad, flat tail
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Males have venomous spurs on their hind legs
How It Behaves
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Mostly nocturnal and crepuscular
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Solitary outside of breeding season
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Uses its bill to detect electrical signals from prey
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Digs burrows into riverbanks for shelter
What It Eats
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Aquatic insects
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Worms and larvae
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Freshwater shrimp and small crustaceans
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Feeds by scooping food from riverbeds while diving
Life Cycle
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Females lay 1–3 eggs
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Eggs hatch after about 10 days
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Young are fed milk secreted through the skin
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Juveniles stay in the burrow for several months
Survival Skills
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Electroreception to locate prey underwater
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Waterproof fur for insulation
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Webbed feet for efficient swimming
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Venomous spur used for defense and competition
Fast Facts
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One of only five egg-laying mammals in the world
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Has no stomach; food passes directly to the intestines
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Closes eyes, ears, and nose while diving
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Venom can cause extreme pain but is rarely fatal to humans
Conservation
Platypuses play an important role in freshwater ecosystems by controlling insect and invertebrate populations and helping maintain healthy river systems through their foraging behavior. They are threatened by habitat loss, river modification, pollution, entanglement in fishing gear, invasive predators, and climate change–driven droughts that reduce water flow. Conservation efforts focus on protecting waterways, improving water quality, regulating fishing practices, and monitoring populations to ensure the survival of one of the world’s most unique mammals.
