A good friend of mine has a now 7 year old Havanese named Lagnie. He was a stud dog at a puppy mill for his first 5 years.
He’s a really good soul. Absolutely no bite in him. When he gets anxious (which doesn’t take much), he completely shuts down. He retreats into his own little world, and will sometimes shake if he’s very worried. But very little bolting instinct, and absolutely no aggression. It’s really tragic- the best description I can give is that he’s very much a shell of a dog.
When she first got him, he was terrified of grass, and had no idea how to walk on a leash. It’s much harder to train these dogs than other types of rescues, because the sorts of things that “mean something” to a normal dog (treats, verbal praise, physical affection or any sort of physical contact) mean nothing to them… and in a lot of cases actually frighten them.
Honestly, the best thing she ever did for him was board him with a trainer for 2 months not long after she got him. She means well and is willing to do whatever needs to be done to help him, but she’s not a talented dog trainer. The pro trainer was a great stepping stone into “normal life” for him. He got structure, skilled training, and learned how to interact with people and other dogs. And honestly, I think the kennel environment helped a little, too. I doubt he liked living in the puppy mill, but the fact remains that living in a house was a HUGE and scary change for him. A kennel where he was well-cared for a treated kindly was an environment he was more comfortable in at the beginning.
My friend has had Lagnie for almost two years now, and he’s only just getting to a point where he gets excited to see her when she gets home. He’s still not big on physical contact.
He’s been a challenge to house train, and has a terrible coprophagia problem. But he’s getting better, and in the past few months has really started to learn how to “hold it,” especially when he has to pee. She lived in a house with carpet for awhile, and that made things doubly hard for the little guy (since he could smell past accidents).
He has really poor vision and hearing, probably from years of sensory deprivation. He doesn’t chase other animals or bark much. It took some time, but he has really bonded with my friend’s other dog, and often looks to her when he’s concerned.
Overall, he has really enriched my friend’s life. It’s been incredible to watch him bloom, and to see him learn how to enjoy life. He’ll never be a “normal” dog (he’d do horribly in a busy house or with kids, I’m sure), but he’s a wonderful little guy, and I know my friend has found working with him to be very rewarding.