It's a local chain here in CA, Pet Food Express and now it's happened, three times.
I only go there to buy kibble. The first time, it was a new cashier who didn't know Ollie, and I said, hey, would you give me a discount if my dog can do math problems?
skeptical, the cashier said yes. after 3 math problems, I think one addition, subtraction, the multiplication, the cashier gave me 25% off.
It happened again, a couple of months ago. then today, one of cashier's recognized Ollie, even though he came to school today and was beat, the cashier asked if he could give Ollie a math problem. I said, if you give me a discount
I threw in the discriminating word task, I used their name badges, and asked which name they wanted ollie to learn. he killed it.
got the discount again.
So perhaps if your hav has a novel trick, it can save you some moola.