Emergency Drinking Water Options – Drinking water is the most crucial item to have in your pet’s emergency Kit.  For a healthy active pet, we recommend 1/2 to 1 oz of water per pound of body weight per day.  For example, if your pet weighs 20 pounds it will need 10 to 20 ounces of water per day.  Our Mayday emergency drinking water comes in 4.225-ounce foil-sealed pouches with a 5-year shelf life.  Your 20-pound pet would need 30 to 60 ounces for 72 hours divided by 4.225 = 7 to 15 packets of Mayday water.   Remember plastic bottled water only has a 1 year shelf life so remember to rotate it based on the expiration date on the bottle.