The name "echidna" originates the from Greek mythological goddess Echidna, who is often referred to as "The Mother of All Monsters". Know all those crazy FUBAR monsters in Greek mythology, e.g., the Lycian Hydra and the Lernaean Chimera? They had to come from someone's uterus. That uterus was Echidna's. The ferocity of the animal was so much, the first European biologist to mention it had his face gnawed off by one. Subsequently, the biologist named the ferocious it an echidna. Needless to say, echidnas are total hellions.
Firstly, echidnas are mammals; i.e., they are classified in the taxonomic class Mammalia. Secondly, echidnas are monotromes; i.e., they are classified as a member of the taxonomic order Monotremata, the only other member of which is Ornithorhynchus anatinus. There two extant genera of echidnas in which there are four extant species: Tachyglossus aculeatus, Zaglossus attenboroughi, Z. bruijnii, and Z. bartonithe. Extinct species of echidna known via fossils include Megalibgwilia ramsayi, M. robusta, Z. robustus, and the sheep-sized Z. hacketti. This part is boring! Make something up funny about sheep sized.
Species of echidna live in Australia, Papua New Guinea, and Indonesia.
Being monotremes, echidnas are mammals that lay eggs...wait...what? Mammals that lay eggs?!
That's the craziest fucking thing I've ever heard!
Male echidnas possess a four headed penis...
Female echidnas possess a pouch on the ventral side of their abdomen in which they carry their eggs...
Like platypuses, echidnas possess four pairs of sex chromosomes...
Echidnas have many hobbies to past the time. One such pastime is to run across roads, playing chicken with automobiles. Another is killing and eating Velociraptor.