Echidna Puggle Important facts about echidnas: 1. they are mammals but they lay eggs, like a platypus!, 2. although their diet consists mostly of ants and termites and they are sometimes known as "spiny ant eaters," they are not related to true anteaters. 3. they live in Australia and New Guinea, 4. their name cames from a monster in Greek mythology. 5. THE BABIES ARE KNOWN AS PUGGLES. Puggles. Puggles.