In my experience, dogs will eat the same thing for years and years without getting tired of it. I’ve had many dogs over the years and they were all happy with the same food.
I don’t wax floors anymore. I used to wax floors until the day my daughter slipped on that waxed floor and broke a dish with food in it. She wasn’t hurt, only her pride, and she really wanted to eat what was in that dish. She was mad at me for waxing the floor.
I never dressed up for Halloween. My father wouldn’t let me (or my brother either). All we had when we went Trick-or-Treating was one of those masks like the Lone Ranger wore. We still got lots of candy, and some people gave us pennies or nickels. That was back in the early ’50s.
In my experience, dogs will eat the same thing for years and years without getting tired of it. I’ve had many dogs over the years and they were all happy with the same food.