My dog recently began attacking horse
So since we have gotten my horse (about a year and a half ago) my dog has always barked at him and chased at his heels when my horse is first let out. It has never been a problem as my horse could care less and if it does bother him, he gives a warning kick to my dog.
Lately my dog has been getting more and more persistent, barking at him all the time and nipping the air behind his heels. Today when I was outside my dog was barking at my horse and actually bit him. My horse freaked out and trotted away unharmed.
My fear is that my dog will seriously injure my horse and I don't know what to do. Whenever he barks we always give him trouble, but nothing seems to work. I am at a loss as to how to make my dog leave my horse alone.
Any suggestions or advice is much appreciated