I have an older horse named Rooster (pictured here) who has been a reliable, old steady Eddie for years. He was the best trail horse I've ever had...would go along and even if the world was crashing down, he would never lose his cool. Well, recently, he has started spooking and actinvery quite nervous on the trail. Yesterday, he suddenly lept into the air, did a 180 and took off at a full gallop (I came off but am fine). Two weeks ago, he did the same thing while I was riding during a windy day.
The only thing that has changed with Rooster is his feed. For a time, it looked like he was losing a bit of weight so we changed him from Triple Crown Senior to Nutrena Empower (He also gets beet pulp and his usual hoof and joint supplements and electrolytes). I am thinking that perhaps he's getting a bit rev'd up from the Empower.
His health otherwise is fine...no visual problems or anything else.
Can anyone offer me any suggestions?