My parents used to take in rejects from breeding kennels. I will never forget one dog they brought home, a male Rough Collie - beautiful animal he was, a pure pedigree. I wasn't there when they collected him but my mother told me how he cringed away from his owners and practically crawled across the floor. The next morning after they had collected him, I was the first one up and as I went down stairs I saw this dog scoot across the floor in the living room. I found him struggling to get in to the small gap between the sofa and the wall. He lived there for 3 days, wouldn't move by choice- we had to drag him outside to do his business but when let back in he would vanish behind the sofa.
After three days he came out and I was the first one he came too, I think its because I was always first one up what with having to get up really early for a bus to college and I used to talk to him and give his bum a bit stroke. He slowly walked across the floor to me and put his nose on my knee, but when I raised my hand to stroke him he flinched away and vanished behind the sofa
Over time he became more confident and bonded with the rest of the family, but he was definitely my dog - he even 'told' me I was pregnant. I'd got married, moved out - came home to visit and he wouldn't leave me alone, followed me everywhere. He'd never done that before not even when I'd been on my period so took a test as DH and I had been trying and sure enough, two lines.
Giving him his first bath was fun, he was matted with muck and his bum - it was covered in matted crusty, dried shit. They'd never clipped back his arse hairs much less groomed him.
Previous owners wanted rid of him because he wasn't doing his dogly duty. They wanted to breed from him but he never sired a litter despite multiple attempts.
Anyway, that long winded story was my worst experience from a breeding kennel and because of it I wouldn't touch them, not even for some hypothetical nice breeder who is only in it because they wuv dogs soooo much.
On the occasion you read something in the local paper about a kennel being shut down and the owners fined for animal cruelty - is anyone ever actually surprised? Horrified yes, but not surprised.