The venom produced by the male platypus is primarily used during the breeding season for competition and defense. Male platypuses have venomous spurs on their hind legs. They can deliver a painful venomous sting when threatened by predators or when competing with other males for access to females. This venom is not typically used for hunting or for capturing prey but serves as a deterrent against threats and rivals. The effects of the venom can be quite painful, causing swelling and discomfort in those who are stung, and it can serve as a powerful defense mechanism for the platypus.