Few enemies...
The hedgehog has few enemies but it occasionally falls prey to a fox or badger. Car traffic is another danger. Hedgehogs usually dwell in gardens and similar human settings, preferably those that are a bit untidy, with leaves and brushwood lying about to provide materials for the winter nest.
...thanks to the quills
The hedgehog's quills offer protection against enemies, especially when it curls itself into a ball to protect the exposed belly. At birth, a hedgehog has about 100 quills lying in the skin of its back. Gradually, these grow out, along with new ones. An adult hedgehog has about 6000 quills.
