The following book explains how to train your ferret to walk on a leash: "Training Your Pet Ferret" by Gerry Bucsis & Barbara Somerville. You can order it from The American Ferret Association (AFA) and a percentage of the purchase price will be paid to the AFA. I live in Ottawa, Eastern Ontario, Canada and have been walking our ferrets every summer since 1993. I never had a problem with fleas. Our ferrets do get ticks on a regular basis. I walk them in a place with long and short grass. During each outing, they go in a tunnel (not a burrow) that was started by our first ferret and completed by a groundhog or wild rabbit. Lorraine and our companions: Pitchou, Boulette (little ball) and Jello [Posted in FML 6034]