How much water should my pet drink? c Expand All C Collapse All A How much water should my pet drink? A good general guideline is that a healthy pet should drink between ½ and 1 ounce of water per pound of body weight each day. For example, a 20-pound animal would normally drink 10 to 20 oz per day. Category: Hurricane Preparedness Post navigationPrevious post: What is the most important item to put in my pet’s go-bag?Next post: What should I do if I can’t get back to my house? Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.