think the legendary greyhound ferret was just poor diet, feeding bread and milk your going to get small scrawny ferrets. The pet/show lot have done the opposite and got huge terrier sized ones.
someone handed a "lost" (their) ferret into a vets a friend works at, she phoned me and I got it. It was a youngish small lean silver jill with a arched back, nipped like feck(stopped after being fed properly) and fast as feck. Bred to a normal hob only one came similar to her. Could of bred back to her but not the breeding type and prefer medium sized ferrets