Not all of them are. I’ve had, and have now, finicky cats who need some brand & flavor variety to keep up a healthy appetite.
Also, pets’ excitement at mealtime has as lot to do with the ritual. Cats love rituals of all kinds, not just food-related. Fascination for daily activity patterns is built into their brains; it’s essential for hunting.
I don’t have as much experience with dogs, but I imagine the social dynamics of mealtime are important to them. As for us too!
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