A coworker of mine has trained his dogs in this way. They have over a dozen buttons now. The dogs know each others names and will say things like "Sadie Ralphie

A coworker of mine has trained his dogs in this way. They have over a dozen buttons now. The dogs know each others names and will say things like "Sadie Ralphie Outside Play" to ask if they can go outside, or "Sadie Upstairs Nap" which is followed by going upstairs and taking a nap. I'm surely getting the exact wording (and definitely the names) wrong, but it's pretty crazy what they're capable of.