Hedgehogs are like prickly balls.

刺猬像有刺的圆球。

The hedgehog rolled itself up.

刺猬把子蜷缩成一团。

Very similar to a hedgehog, except that the knarl takes offense easily and will wreak havoc on garden plants (FB).

和刺猬很相似，除此之外它的攻击性很强，会大肆践踏花园的花木来发泄怒（动物）。