I have worked with over 4 rescue horses. Owned 3
Thunder- Crossbred gelding. Chained to a wall when just a baby in knee high poop in a pig pen. Had halter grown into his face and was beat with PBC pipe.
Missy- Qh Mare. Owners didn't know what they where doing. Good 300 pounds under weight. Most hair was burned off.
Gracy- Crossbred mare. Saved from slaughter.
Odessy- Paso Mare. Starved, was half dead. Didn't know she was pregnate untill a month before she gave birth.
I have worked with a few others but non that bad. I really just either go to a slaughter yard or I just happen to run into a horse that need rescuing. We have one rescue dog. A yorky that lives in a small cage outside. All her hair was gone and she was infested with fleas, extremely skinny. Now she is over-weight and happy. But really I don't go looking to rescue things, they just happen to end up that way.