A. It would be worthwhile to run a urinalysis test and maybe bloods also to rule out conditions causing increased thirst such as diabetes, Cushing or kidney disease. I also recommend you get your vet to check his prostate as this can sometimes affect the flow of urine and make this slower, although constipation is more commonly seen in dogs compared to men. If he is the only dog in the house, measure how much water you are putting out over 24hours to assess the degree of thirst also
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