Unit for measuring the weight of a large dog

I think it depends on what breed the dog is. For example it might be more informative to list a large teacup Chihuahua's weight in grams. That would tell you the large Chihuahua's weight relative to other large Chihuahuas. On the other hand a large Old English Mastiff's weight given to the closest kilogram would tell you plenty about the dog's size compared to other large dogs of that same breed.

However I think the correct answer is kilograms.