Maybe get him tested for a UTI. Excessive drinking is a common symptom-as they try to flush the bacteria out of their system. My current foster has a reoccurring UTI problem and we know it's coming back when she starts to drink a lot of water.
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Mikko (USDAA) MAD, SAM, GM, RM, SJ, SS; (NADAC) EAC, EJC, TN-E, TG-E, WV-O, OCC, HP-O, VerO; (AKC) NAJ, CGC; NW1 - 7 year old GSD
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