Echidnas are toothless and feed almost exclusively on ants and termites. They are equipped with a long sticky tongue that extends perhaps 17 centimeters beyond the end of the snout.
Long spines cover the body and fur is present between them.
About two weeks after mating occurs, a single soft-shelled egg is deposited directly into the pouch and hatches after 10 days. Because the echidna does not have teats, the baby clings to specialized hairs within the pouch, where it suckles milk oozing from the mother’s mammary glands.
When disturbed, the echidna either curls into a spiny ball to protect its soft underside, or digs its belly into the soil, so that only the spines are exposed.
Males have a spur on the ankle of the hind leg but, unlike that of the platypus, it is not venomous
Note the Spur in this photo