I have recently acquired a retired show fox terrier. He has a lovely nature BUT I am wondering the chances of him living peacefully with our cat and horse. At first introduction to the cat he didn’t blink an eyelid, introduced them with the cat free in the house and him on a leash giving him treats for good behaviour. However he was more than a little keen in the cat when he saw him wandering past the window this morning! He behaved well around the horse on first intro also, but today I had to hold the lead back to keep him from running up to the horse. I understand it is likely because the cat was walking past rather than still but the horse was stationary.
He is reasonably excitable- but definitely not at the top of a scale of one to ten.
I have started some clicker training with him, but would love to hear any more advice on the situation.