I give Yuka a choice of three treats. He chooses the one on the right, then halfway through stops, goes to sniff the other two just in case, one by one, but ultimately sticks with his original choice and leaves with the treat in his mouth. At the staircase, he decides to return anyway, checks that the other two are still there, sniffs them again one by one, weighs the options, realizes that no, the one he chose is indeed tastier, and leaves.
After some time, having chewed on what he deemed the tastiest, he returns and is surprised to find that the other two are gone. And he’s still scratching at the pantry door. Such injustice! There were three! on the floor!
Hi, I'm Rauf Aliev. 