Nonono, alcohol tolerance is a function of the creature’s weight, and it works perfectly.

The problem was the amount of alcohol that would get transferred on their paws when walking on spilled booze. If the alcohol was spilled from a mug, then the game would place the equivalent of a full mug of booze on each paw, which would then be ingested when the cat cleaned them.

Four full mugs of beer would be more than enough to waste anything the size of a cat.