How much fluid does a dog need to stay hydrated while running? The amount of water your dog should drink varies on his or her weight. Your dog should drink 1/2 to 1 ounce of water per pound. If you have a 65-pound dog, he or she should drink 36 to 65 ounces of water per day.
Of course activity levels and weather can make a difference so pay attention to your dog if the weather is warmer than normal or Fido is very active. In other words, 36 ounces is not sufficient if you take your 65-pound dog out on an hour run in warm weather. Make sure to go to the 65-ounces end of the formula, especially if your dog has had an all out session with any duration to it.
Checking for Proper Dog Hydration
Since dogs can't ask for a water break, it's your responsibility to check in with Fido regularly.
Your dog's nose says a lot. If the nose is dry, it means water is needed. Lead your dog to water and encourage the action to drink it.
A dry nose is not the only sign of a dehydrated dog. In fact, your dog can have a wet nose and still be dehydrated or on the verge of really needing fluids.
Skin loses elasticity as it loses moisture. Skin without moisture will remain wrinkled. This is a good reason for you to stay hydrated, too.
Pinch the skin on the back of your dog's neck with two fingers. If the skin goes back to laying flat on the neck when you let go, then your dog is hydrated. If the skin remains squished or wrinkled, your dog needs to get some water as soon as possible.