Despite laying eggs and other adaptations that we associate more with non-mammals, like the duck-bill platypus's webbed feet, bill, and the venomous spur  males have on their feet, they are, in fact, mammals.
Meskipun bertelur dan pola adaptasi yang mirip hewan non-mamalia, seperti kaki berselaput pada platipus berparuh bebek, paruh, dan taji beracun pada kaki hewan jantan, monotremata adalah hewan mamalia.