The hedgehog gets associated by some cultures to the fertility of earth, but it is mainly a symbol of protection on account of its spikes, and of vitality often associated to the sun, with the spikes recalling the sun rays.
For this reason, stylizing it, we added a spiral motif which is a sun related symbol, shaping it in a way that makes the general look resemble a seashell since seashells are symbols of love and safe shelter themselves.