I had to leave my horses together in a paddock for quite a while and they have become rather attached (one that is). At the moment, I am trying to get him used to be able to survive on his own in the shed so I can trim his feet. I have separated the horses for 6 months now. Their paddocks come together in a stable, but they spend long hours not even seeing each other. I also take the horse in question out of the paddock and tie him up. The other hose is fine on his own, he just walks off. Today, I tried to take the anxious horse up into the shed (just to tie him up) and he freaked out. My question is: Do I have to separate them even more, so that they cannot even touch each other? What I don't understand is that the 'problem horse' can be on his own for hours/days but then all of the sudden decides, he has to run up and down the fence because he can't see the other horse. This might only happen every 5 days or so, but then all of the sudden 3 times a day. His separation anxiety seems rather random and it doesn't seem to get any better no matter what I do. I can tie him up outside the paddock every day and he behaves the exact same way. (I have had the same with float loading - you can do the training daily for weeks and he stays the same). I don't have huge experience with horse training, but at least with the others, there was some progress, but with this horse, I feel I am not making any progress. Any ideas?