If allowed to run in the house, they tend to skirt the walls, furnishings, and hide in corners or under furniture. May dig in carpets, or in houseplants and dirt if accessible. While young hedgies may be easy to handle and do not mind being held, many adults resist handling, and struggle to be let loose. Adult females tend to be more handleable than adult males. Many hedgehogs seem aloof and to not interact with humans, no matter how much handling they received when young.
Adult males are more likely to hiss.
Many hedgehogs will forage for spiders and insects in the home. They are solitary animals except for mating, and usually must be housed separately even if raised with a same-sex littermate. While these animals are being bred domestically, they are essentially non-domesticated, which influences many of their behaviors particularly interactions with humans and other animals. When a hedgehog encounters something new - a new taste, object in the environment, carpet, etc. The hedgie then spits this foam onto itself.