Wiktionary
spikiness
n. The state or condition of being spiky.
Usage examples of "spikiness".
But some black bears and some grizzlies, they have a kind of bristle to the hair on their backs, a kind of spikiness like a porcupine that tells you they're just spoiling for a fight, hoping you'll say a cross word so's they can take a swipe at your head and suck your lunch back up through your neck.