I guess I'll "pass" on a comment
Drunk as a Skunk … or a Wild Monkey … or a Pig - Proof Blog - NYTimes.com:
"A large variety of creatures consume alcohol in the wild, ranging from bumble-bees to elephants. Hooch finds its way into their diets via the fermenting fruit, sap and nectar of various plants, and many exhibit signs of inebriation after they’ve enjoyed a good feed. Their weakness for the substance au naturel is understandable: ethanol is a rich food, with 75 percent more calories than refined sugar, and its distinctive aroma makes it easy to locate."