The desert hedgehog is one of the smallest of hedgehogs. It is 5.5 to 11 inches (140 to 280 mm) long and weighs about 10 to 18 ounces (280 to 510 g). The spines (or quills to give their correct name) on its back can be banded with coloring similar to the four-toed hedgehog. It is usually identified by its dark muzzle. If desert hedgehogs are threatened, their muscles go tight and pull the outer layer of skin around the body, making their quills stick out in all directions. The quills tend to be longer than other hedgehogs for better protection against predation. As such it is extremely difficult to catch one.. [credits: Wikipedia]