Echidna vs. Porcupine

Any of several nocturnal burrowing egg-laying mammals of the genera Tachyglossus and Zaglossus of Australia, Tasmania, and New Guinea, having a spiny coat, a slender snout, and an extensible sticky tongue used for catching insects.Also called spiny anteater.

Any of various rodents of the family Hystricidae, of Eurasia and Africa, or the family Erethizontidae, of the Americas, having long, sharp, erectile quills.

Any of the species of small spined monotremes in family Tachyglossidae, the four extant species of which are found in Australia and southern New Guinea.

Any of several rodents of either of the taxonomic families Hystricidae (Old World porcupines) or Erethizontidae (New World porcupines), both from the infraorder Hystricognathi, noted for their sharp spines or quills, which are raised when the animal is attacked or surprised.

A monster, half maid and half serpent.

Any Old Word rodent of the genus Hystrix, having the back covered with long, sharp, erectile spines or quills, sometimes a foot long. The common species of Europe and Asia (Hystrix cristata) is the best known.

A genus of Monotremata found in Australia, Tasmania, and New Guinea. They are toothless and covered with spines; - called also porcupine ant-eater, and Australian ant-eater.

Any species of Erethizon and related genera, native of America. They are related to the true porcupines, but have shorter spines, and are arboreal in their habits. The Canada porcupine (Erethizon dorsatus) is a well known species.

New Guinea echidnas

Relatively large rodents with sharp erectile bristles mingled with the fur

Burrowing spine-covered monotreme of Australia having a long snout and claws for hunting ants and termites