File:Erinaceus-europaeus 2.jpg|The
European hedgehog (
Erinaceus europaeus). File:Tatou en boule.JPG|The
Southern three-banded armadillo (
Tolypeutes matacus). File:Pangolin defending itself from lions (Gir Forest, Gujarat, India).jpg|An
Indian pangolin (
Manis crassicaudata) defending itself against
Asiatic lions (
Panthera leo leo). File:Lesser Hedgehog-tenrecs (Echinops telfairi) (10292363783).jpg|Two
lesser hedgehog tenrecs (
Echinops telfairi). File:Echidna, Exmouth.jpg|
Short-beaked echidna (
Tachyglossus aculeatus) curling into a ball. BallPythonWithClutch.jpg|The
ball python (
Python regius) curls into a ball when stressed or frightened. Ouroborus cataphractus02.jpg|The
armadillo girdled lizard (
Ouroborus cataphractus). Armadillidium vulgare 000.jpg|The
common pillbug (
Armadillidium vulgare) is so named because it assumes a pill-like form when volvating. Phacops-enrolled.jpg|
Phacops rana, a
trilobite from the
Devonian period. Tachypodoiulus niger 2.jpg|
Tachypodoiulus niger, a
millipede, with legs on the inside and head in the center. Glomeris marginata Pill Millipede Unrolling.jpg|Stages of a
pill millipede (
Glomeris marginata) unrolling. == See also ==