I do pet therapy at our local hospital with Toby, my rough collie. He LOVES it. He can be worshipped in the way that he thinks he deserves. And he gets LOTS of treats.

In my town the Humane Society runs the pet therapy program. Toby was certified in CGC, but it was with a local trainer not one of the national groups.

On the more serious side, the dog must be very stable and very gentle, especially if you're going to any nursing homes. The patients are very excited to see the dog but sometimes they aren't too coordinated and the dog gets poked in the ear or eye. The dog has to be very gentle about taking treats, too.