YOUR DOG SPEAKS SPANISH? - WHAT?

Many years ago I remember being over my father-in-laws house as he gave several orders to his dog. Things such as Sit, Lay Down, Fetch, and others. Now what was amazing to me is he did all of these commands in Spanish! I watched in amazement as the dog followed all of these commands. What the? I looked at the dog, looked back at my father-in-law, looked at the dog again and then blurted out "Your dog speaks Spanish?". HAHA. What a knucklehead I am sometimes. HAHA!