
my dogs are drinking a lot more water because of the weather temperatures.
I have 4 bowls and 3 dogs they are continually emptying them .
two buckets full a day sounds exessive but you do have a large breed compared to mine.
Could be lots of different things eg Diabetic but you may also notice other symptoms eg weight loss, coat condition , liver problems ..my cat also was very lethargic and dreamy and sitting over the water bowl .
I have a cat who is a diabetic I inject her twice a day with caninsulin ... she will need a few blood tests to diagnose so good luck at the vets tomorrow ....dont worry could be something or nothing ...
but ..until your vet visit give her all the water she wants ..