N = 1. I currently have a saluki mix. Think long hair smallish greyhound. He is way smarter than my last dog which was a lab mix.
My lab mix couldn’t understand abstract concepts like pointing. He would just lick your finger. It took me months to teach him to shake, sit, lay down.
My saluki learned sit, stay, come, dance, spin, down, crawl, roll over, shake, and more in like one week of training. He knows the words for frisbee, donut (his favorite toy), lion (another toy), beach, place, eat, and others.