Isn't it a blast how one learns quickly from watching the other? And it doesn't matter if teaching to sit, lay, stay or teaching them the name of a new toy.
We used to always have 2-3 dogs and 2-3 cats. I especially loved how puppies would very intently watch training we were doing with one of the others. They're always watching and paying attention, even when we think they aren't, and learning throughout their lives. Dogs are not much different from wolves in that they're pack animals.
I love training animals. It's great fun for me and it is a game for them. And they get all proud when they finally understand what it is we are teaching them. Like, look at me, I got it!
All I had to do was tell Rudy good boy and Georgia did what he did, lol.