gelding with very agressive behavior

Question
I have a leopard ap-4-5 yrs old- just purchaed about 2 months ag0- owner said cut about 3-4 months previous-he was very agressive initially to my other 3 horses. Gradually became passive and within 2 weeks was in the field with all 3. Now at week 6 he has reverted back to the original- over nite tore up o e of my horses - the least in the ranking- could see in the field where he had kept him cornered all night- excessive fear in 2 of my horses in the morning when I brought them in - ap was very agressive- chasing- running straight at me and them- seemed to think my one gelding was his "MAre"-- very protective. now they cannot all be together- only him and the one he considers his mare. This has been 2 weeks- no change and he is very agressive whenever he sees them or gets near them. Any suggestions?

Answer
I would suggest giving the vet a call and having him looked at.  When he was gelded they had to also get the gland that is just above the testicles - if they didn't he will still think he is a stud.  There is also the chance that he wasn't gelded at all and has retained testicles.  I'd get him checked out because it certainly sounds like something is going on that you are not going to be able to control easily.


Jeff