I wonder if pets in households with those talking buttons ever use them to communicate with each other, or if they never choose to because it's so much less efficient than natural conspecific communication for most of the things they would want to 'talk' about.

One use case I could see is storytelling, specifically to share events that one of the animals was not present for.

In my house, my dogs usually seem to 'communicate' by calling the other's attention, and then observing the same thing together. Maybe they'd like to tell stories for some of the things that one of them misses.