I am currently trying to train my ferrets and cat. I've been working on teaching the cat to target a stick, spin, and beg. the ferrets are doing rollover and beg. with the cat, I lose his attention very easily. He is generally obsessed with food, but when it comes to training he seems to be saying "I love those treats, but not enough to do anything for them". The ferrets are also hard to find a treat they are willing to work for. Ferrets are very picky, but I have found one treat that 3 of mine will eat. Unfortunately the ones participating are my deaf ferret, really really stupid ferret, and my incredibly smart ferret who doesn't stick around long enough to really train!
But really I don't spend much time at all training them, probably because the dog is so much easier!