I will disagree with the statement that Parelli doesn't work for every horse. Parelli is based on using HORSE psychology and using HORSE body language in a way that the HORSE will understand.
Parelli does not work for every person. I will keep the thoughts of why this is to myself, as I know I would get in trouble!
If Parelli "doesn't work" for a horse, it's not the horse's fault or the program's fault. It's the handler's fault. Sounds harsh, but it's true. A horse is a horse. They all have the same needs.....safety, comfort, play, and food. Each Horsenality has a higher priority for a certain need.....like left brained horses are more concerned with food than safety, where right brained horses are the opposite. That's why coaxing a scared, right brained horse into a trailer with food doesn't work! It's our job as aspiring horseman and woman to be able to read the horse and understand what's going on and to know and understand each strategy for each Horsenality. Each strategy is different, and if you use the wrong strategy on a certain horse, of course you will think the program doesn't work It's just not the right strategy!
The Parelli program does not discriminate. By that I mean it doesn't just work on a certain kind of horse.....it works for all horses because it's based on HORSE psychology, etc. I've worked with a lot of different breeds.......a lot of different attitudes.......each Horsenality.......different disciplines.......all different horses with their own special qualities.......and it's worked every time.
My new horse is a prime example. He came to me as being labeled a biter, a kicker, a man hater, and an aggressive, dominant, bully of a horse. Only 1 person could ride him and only 3 people could successfully handle him. I've had him a little over 2 months and he has not once tried to bite or kick me, he is around men and has never acted aggressive. He does have a dominant streak in him but that's just him. He knows now he can not intimidate me like he could all the others, but he's okay with that now. He still has emotional and mental barriers up due to his horrible past, but over time those will slowly come down. I have done nothing but Parelli with him and I'm riding him successfully, with a halter and with a bridle. We are doing advanced Level 2 ground work. This horse is very challenging in many different ways. He's not your average back yard horse, he came with baggage and emotional and mental scars and some days I see every one of the Horsenalities in a short session. That is what makes him challenging, but I love it. It's making me grow more as a horseman (woman) and if I wasn't willing to dedicate myself to the study of the Parelli program and to be a student who is striving for excellence, I could EASILY say Parelli wouldn't work for him. But because I am a dedicated student and I understand the theory and can apply it correctly, the only thing I ever get out of any horse I play with is success.