A commonly asked question concerns hedgehog and other pets.  Can they live together?  Can they coexist peacefully?  While the answers aren't always cut-and-dried, there are some basic rules that will help your pets get along.

Cats

Cats and hedgehogs can coexist peacefully, especially once the cats discover that the hedgehogs are covered with quills. Even the most stubborn cats will give hedgehogs a wide berth once they've had a poke in the nose or on the pads of their feet.

The secret is to introduce the two together by holding the hedgehog in your arms, then allow the cat to come up and investigate the hedgehog. A quick and painless nose-full of quills later and your cat will have gained a lifelong respect for hedgehogs.

Dogs

In general, the rules that applies to cats will likewise apply to dogs, but you must be very careful when dealing with large breed dogs and those with obsessive tendencies.

All first-time encounters should be fully supervised, as should subsequent encounters for the next several visits until such time as you are confident with your dog's interaction with the hedgehog.

Ferrets

While I have heard good reports regarding hedgehog and ferret interaction, I feel it extremely important to stress the importance of supervision with all encounters.  It only takes a split second for something to go wrong.

Rodents & Other Small Pets

Hedgehogs will generally get along fine with Guinea Pigs, Rats, etc. in a common play area just fine, but housing them together is not recommended.  They should be housed separately in all but the most unusual of circumstances where a strong emotional bond develops between the two pets.  Even then, care and supervision must be exercised to ensure that neither the hedgehog nor its companion are injured.