09/13/2026
Spiky on the outside, surprisingly gentle by nature — the echidna is one of only two egg-laying mammals left on Earth, alongside the platypus. Found in Australia and New Guinea, it uses its long snout to sense the electrical signals of insects underground, then digs them out with sharp, sturdy claws. When threatened, it simply curls into a tight ball of spines, letting its natural armor do the work.