hedgehogs useful pets because they prey on many common garden pests, While on the hunt, they rely upon their senses of hearing and smell because their eyesight is weak the bulk of their diet—insects, worms, centipedes, snails, mice, frogs, and snakes. They usually sleep in this position during the day and awaken to search for food at night. Hedgehogs hibernate in cold climates.They have The young born each year, in litters ranging from one to eleven.