Underwoods Horse Medicine, It is for dogs too. This is the best medicine I have ever used.   
Underwood Horse Medicine - Wynnewood Oklahoma
 My friend had a horse that had a bad accident, we used  this medicine on him and in 2 months time it was healed. 
You can see the pics and results here 
bluefiredreams/JJ accident - Page 1 - Photobucket - Video and Image Hosting  if you would like,Pictures were taken  almost each day but be warned  the pics are graphic, The horse was cut  extremely bad.  Underwoods was a  lifesaver for this horse.