A dog drinking excessive amounts of water can be caused by various factors including normal physiological reasons and potential medical issues. Normal reasons include hot weather, increased activity, dietary changes such as switching from wet to dry food, and certain medications. Medical conditions that commonly lead to increased water intake are diabetes mellitus, kidney disease, Cushing’s disease, urinary tract infections, and electrolyte imbalances. Notably, increased thirst often accompanies frequent urination and may signal that the kidneys are not functioning properly or that the body is trying to flush out excess sugar in cases like diabetes. If the excessive drinking continues for several days or is accompanied by other symptoms such as lethargy, vomiting, or changes in appetite, it is important to consult a veterinarian for diagnosis and treatment.
