Generally speaking, hedgehogs will try to run away from humans if they feel scared or threatened. But it may be surprising to find out that they’re a lot more dangerous than you think. Even though many people have hedgehogs as pets, their spikes can be dangerous to human skin, or anything else for that matter. They’re still on our side, though, because when a human picks them up, they curl their bodies and pull their spikes inwards. But when they’re threatened, they extend their spikes vertically. It’s also possible that their spikes carry a host of bacteria, so if you do get pricked, make sure you clean it. Adult hedgehogs also have a more powerful bite than smaller ones (via RD).