I've never been able to understand the dog swapper mentality...
There's a lad local to me...bull cross for sale, will swap for rabbit dog...next week, rabbit dog for sale will swap for terrier...then he's looking for a whippet, week after he's swapping it for hound pups and has them for sale three days later...
The dogs don't get to stay long, although I did see how he keeps them and it's probably just as well...