My farrier tells me that he’s the only person who can enter a certain client’s property without being set upon by the resident Rottweiler. When he turns up to shoe the horses, this ferocious dog flashes a broad smile and prances alongside his ute all the way to the stables. The Rotty knows that the farrier’s visits bring a banquet of hoof trimmings. Horse hoof. A doggy delicacy.

Last week I took our Labrador Lila to meet the farrier. I thought it might broaden her horizons. She could see what some humans do for a living. Learn about equine podiatry. Take in some country air. Whatever. I hadn’t considered that, once given a taste of Lily’s toe, nothing else would matter. Her scope would narrow to hoof, hoof, hoof and more hoof.