After picking a potential pet up, examine it closely. Hissing is okay. It is simply frightened because it doesn t know you. Clicking, however, means that it's trying to threaten you. This is NOT acceptable hedgehog behavior and you should look at a different, better-tempered animal.
Every hedgehog is different and unique.
Some like to play and explore, while others are more content to cuddle. You will be most satisfied with your new pet if you carefully choose the one that best suits your own personality and lifestyle. Sometimes an ear has been chewed on by a sibling. As long as it has healed, this is not something to worry about. Bare spots indicate an unhealthy animal.