I usually don't get medical care for a simple cut wound on myself or my son when he was young. Just applied first aid and a bandaid and watched for any issues. My dog - yes, he'll get vetted for a simple cut.
And I largely agreed when I said I'd administer the small amounts of water in most cases - not all as I outline - while waiting for the vet appt. in an undiagnosed dog or no vet appt. in an already diagnosed dog, with vet approval and vet direction, to help to stave it off dehydration with properly administered water. My mantra, vet first but in most cases - again not all - tiny amounts of water that doesn't enter the bronchi likely will help more than it will hurt. And a dog so ill(see my exceptions when I wouldn't add hydration) that tiny amounts of water would cause great harm should have been vetted long before.
But OP's dog is apparently hale and hardy, afebrile, playing, eating, urinating normally just not drinking much water and somewhat constipated so I opined on what I'd do except in the instances I outlined (and I should add no water if the dog is putting out no to little urine) if my dog began to demonstrate early signs of dehydration - which can be a killer. Never heard of a dog that got sicker from tiny amounts of water properly administered. Google 'dog died from giving it small amounts of water' and you don't find much. Google 'dog died from dehydration' and you gets lots of hits and that's my worry with our tiny Yorkies. My Scotty and Jilly both only weighed in at 3 lbs. soaking wet and so many YT'ers have tiny to small Yorkies so being attentive to their hydration can be a big deal.
__________________ Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |