The echidna is classified as a mammal because it grows fur (there is fur between its spines) and because the female echidna feeds its young with milk. Both of those characteristics are found only in mammals.
An echidna IS a mammal. It is an egg-laying mammal, known as a monotreme,
Egg laying mammals are the mammals classified as monotremes. These include the Platypus and various species of Echidna.
Kingdom: AnimaliaPhylum: ChordataClass: MammaliaOrder: MonotremataFamily: OrnithorhynchidaeGenus: OrnithorhynchusSpecies: Ornithorhynchus anatinus
The echidna is a monotreme. It is an egg-laying mammal.
The Echidna is toothless
The catfish is classified as a fish, not a mammal. It is cold-blooded, lays eggs, and breathes through gills. *It should be noted that some mammals do lay eggs, they are known as monotremes, and they include the platypus and the echidna.
The only other egg-laying mammal is the echidna which, like the platypus, is classified as a monotreme. There are two species of echidnas: the short-beaked echidna (Tachyglossus aculeatus) of Australia, and the long-beaked echidna (Zaglosssus bruijni) of New Guinea. There are several sub-species of the long-beaked echidna: the Western long-beaked echidna, Sir David's long-beaked echidna and the Eastern long-beaked echidna.
This is the echidna. There are two species of echidna, which is a monotreme, or egg-laying mammal. One species is the short-beaked echidna of Australia, and the other is the long-beaked echidna of New Guinea.
The echidna is one of only two types of monotremes in the world.Like the platypus, the echidna is an egg-laying mammal.
when was a whale first classified as a mammal
echidna