Closest I ever came to losing a ferret was 3 years ago, I was doing a small woodland, did the first warren chucked the 2 jills I had back in the box and went to gut the few rabbits I had and lift all the nets. I pick up all my gear and move on to the next warren lay my nets go to get the box of ferrets and realise its a bit light, I hadn't put the lid on properly and both jills had gotten out, I ran back to the first warren and found one of them straight away, the other took me well over an hour to find, I was walking around all the ditch warrens nearby and eventualy got a bleep on my locator,