My bulldog can count. He's heard me call my boys, and if they don't respond I'll count them. The heavy hand of the dad comes down if they're not reporting to me by the time I get to three.
One day my bullie was getting into some mischief. I called him and he ignored me. I started counting. He bout broke his neck getting to me by the time I got to two.
He still responds to counting. I think he understands it better than my boys.