Have you ever tried this? Say a word that sounds like a command and see if your PIT reacts to the command? The reaction can be comical.
Sit. Down. Shake. Roll. Stand. Heel. Side. Back. Turn. Up. Visit. Wait.
But yesterday I instead of Down I said, "Doughnut", "Daisy", "Daffy" ... and Haddie didn't move from her Sit, but sometimes would twitch like she thought a Down was coming. It was funny. Then I said Down and she responded correctly.
I think it is a sign that she knows the word.
Sounds Like .... yep, I love Haddie!!!