See the knot on his back right leg. Well, when he was about 4 years old we were riding on 2nd creek.  The water was down and the bank was about chest high on Buck. I got him to jump up on it and he jumped fine but his back leg landed about 10 inches away from the edge and his leg went down thru the ground where the water washes the bank out . So his leg went thru about 6 inches of dirt that can no way hold him up and when he picked his leg up a piece of glass or flint rock cut his leg where you see the knot. When he cut it you would have thought I cut his hide about 5 inches with a razor blade with one straight cut without touching the muscle. You could see his muscle sliding thru the cut when he moved. It was a clean cut that took me a year and a half to get it healed up. Paid all kinds of money to vets, medicine, trips with him in trailer to vet. Wouldn't heal til I listened to this old guy that said wash it every day with warm soapy water and put wonder dust on it. Well it healed so fast it almost closed up within days. Now all these years later you can tell it has fluid in it . It's about as big around as a tennis ball maybe smaller and it pokes up from his actual muscle about 3/4 on an inch. It doesn't bother him now. People have told me to drain it by lancing it. Well hell fire it took me a to long to heal it up I'm not cutting it open again. He is a old foundation bred A.Q.H.A registered Horse with a long list of famous names in his background and he is a trail horse for my amusement. That knot just gives him a good battle scar for me to point at and it doesn't slow him down. He will out ride most 5 year old horses that I ride with on day trailrides and I'm 230 pounds and he is 17 this year. Well thats the story behind the knot if you was wondering what it was.