No, just an observation from movies which feature southern characters and their dogs.
Ahh, then that would be yes given that movies are fiction and not an accurate reflection on reality, certainly not for assertions that allowing dogs to imbibe beer is a peculiar trait of the lower, trailer inhabiting class of the US which are now southern to boot. The last experience I can recall of providing grog to dog was via a well off pilot of Scottish extraction.
Okay, beer is one thing, but about whiskey? Could any dog drink whiskey or bourbon?
We have known dogs to imbibe beer, I would suppose that it is possible that some might also imbibe spirits though their harsher effects would suggest against. However we could start a long, long list by asking of things a dog could drink or eat, such would be a tad pointless speculation though.
Hope is but the first step upon the road to disappointment.