pubescence

having or covered with protective barbs or quills or spines or thorns or setae etc.; "a horse with a short bristly mane"; "bristly shrubs"; "burred fruits"; "setaceous whiskers"

very irritable; "bristly exchanges between the White House and the press"; "he became prickly and spiteful"; "witty and waspish about his colleagues"

Watch out for climbing Hedgehogs

Thick set with bristles, or with hairs resembling bristles; rough.

With stiff hairs.