You will always get a vet’s attention by telling him that your pet is drinking more water than he used to. Drinking excessive amounts of water is a symptom of a number of diseases and syndromes. Common causes of increased thirst include kidney disease, diabetes, metabolic conditions, bladder problems, glandular problems, and certain types of cancer.
Decreased appetite in combination with excessive thirst is a troubling combination of symptoms.
I strongly recommend that you have a veterinarian assess your pet. A panel of blood and urine tests will almost certainly give you insight into the problem. The sooner you do this, the more likely it is that you will be able to treat the condition.
For more information on changes in water consumption in pets, please visit my website.
Photo: Fortunately, Jackie doesn’t look like she’s drinking all of that water.