I've seen another animation that included mug and Tama eating some kind of stick(?)
First thing that came to my mind was some sort of stick-shape cracker.
It's different from toothbrush animation. That was in my V2 when that version was a new thing. I think I had Kuchipatchi. Never seen that again after it.
In toothbrush animation Tama is in the middle of the screen looking straight to 'user', but in this other Tama was in right side of the screen. Plus the mug didn't have heart icon like the toothbrush mug has.
You might be right, but this is on my v4 so i think it might be different- i watched closely the next time this happened, and yeah, I think my tama is brushing it's teeth- I feel like an idiot because it looks so obvious now lol!!!!!