The platypus’s hidden defense

A platypus looks better equipped for paddling than fighting, but an adult male carries a sharp spur on each hind leg. Each spur connects to a venom-producing gland. When threatened or struggling, the animal can drive a spur into an attacker and deliver venom through the wound.

The venom is especially relevant during the breeding season, when males may use it against rivals. It is not a weapon for hunting: platypuses feed on small aquatic animals, which they find underwater with the help of sensitive receptors in their bills.

A painful surprise, not a reason to panic

A spur injury can cause severe, prolonged pain in people, along with swelling. Platypus venom is not generally considered lethal to humans, but the pain can be difficult to treat. The risk is easily avoided: platypuses are elusive wild animals, and trying to catch or handle one is unsafe for both person and animal.

That distinction matters for visitors to Australia’s waterways. Wildlife can be strikingly unusual without making an ordinary outing a confrontation: watch from a respectful distance, and leave the spurs—and the platypus—alone.