Roy Kirkham "just cats"
Each mug has two cats
My mother looked at the cat above & said, "why does it have 2 different eyes?"
Me, thinking perhaps she is needing her glasses, "No, black & white cats often have uneven marking."
Her, "No, one eye is cat slit and the other is normal."
Me, "Well, I'll be damned. Good eyes! On you, not the cat."
(On the real mug it is very clearly a line for a pupil and the other an oval. Clear once someone points it out. Feel I should say that.)