Echidnas have slender snouts and long, flicking tongues. They also has distinctive sharp spines (quills) along their back and sides for protection against predators. When threatened, the echidna will curl inwards, leaving only their sharp spines exposed.
Fact about Echidnas
The echidna is equipped with horny plates on its tongue and the roof of its mouth, instead of teeth. It crushes termites and ants between these plates. The echidna's tongue is approximately 18cm long.