According to scientific studies, dogs generally understand between 165 and 250 words. So, whatever language you speak, your pup is only understanding a small percentage of the words you use. And if you normally speak English, there probably isn’t much difference between you saying a rarely used English word when speaking to him (“you obstreperous dog!) vs saying foreign words when speaking to him (“perro malo!).
On the other hand, maybe he’s noticing that, at times, he doesn’t understand any of your words, when generally he knows quite a few of the words you normally address to him (good boy!). Or maybe he’s picking up on a difference in your tone or in your “confidence” when practicing a different language; dogs are very sensitive to things like that. |