Echidnas primarily eat ants and termites but are also known to eat various invertebrate larvae and earthworms. The size of prey that the echidna pursues is limited by the gape of the echidna's mouth which is around 5 millimeters.
The echidna does not have teeth and has to break down food by grinding it between his tongue and the bottom part of his mouth. The echidna is also referred to as the spiny anteater. Echidnas are commonly found in Australia and New Guinea. Echidnas do not do well in extreme weather conditions and find comfort retreating to caves or rock crevasses. The echidna tends to be a solitary animal and is not territorial.