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Tachyglossidae

Tachyglossidae

Echidna (Tachyglossidae), one of four peculiar egg-laying mammals found in Australia, Tasmania and New Guinea. They eat and breathe through a bald tube-like beak extending from their dome-shaped body. Covered with spines. Echidnas have round eyes and slits for ears, two small nostrils (or nostrils) at the end of their beak, and a small mouth. Electroreceptors in the skin of the beak sense electrical signals produced by the muscles of invertebrate prey. Echidnas are active day and night.