It's a defence mechanism just leaving the spikes exposed.
By rolling up their body into a ball
they curl up in a ball
hedgehogs curl up into a ball when threatened
curl up in a ball and cry
curl up in a ball and scream like a girl.
they curl up im a ball in a dark place
If you want the ball to curl shoot it from the right/left
I have a hedgehog of my own! They can be very energetic. Mainly at night, but in the day, they can sleep for endless hours. They are very curious creatures. They love to squeeze into tight spaces, chew, and 'play around' with small objects. When they feel threatened, they quickly curl up into a ball and expose their sharp quills and breathe loudly or snort.
because it is dreaming of sex
Most can curl up into a ball.
Yes when they are scared they curl up into a little ball.
some trilobites can curl up into a ball to protect themselfs