Dehydration is a serious threat to the health of a puppy. Mild dehydration is treatable at home but serious cases require the immediate attention of a veterinarian. Dehydration is treatable when your response is immediate. Waiting increases the chances of serious organ damage.
Symptoms of Water Loss
Physical signs of dehydration are evident in the mouth and eyes. Look for a dry, sticky mouth as signs of water loss. Panting and sunken eyes are also common signals. Dark and discolored urine are obvious signs but you must wait and watch the urinating puppy. Pull the skin up on the puppy's neck. If your dog is dehydrated, it will not snap back into place.
Treating a Dehydrated Puppy
Provide water and allow your puppy to drink at will. The puppy will quickly return to normal after mild dehydration. Add Pedialyte or unflavored water with added electrolytes to the water dish to speed the recovery process. Leave the water full and easily accessible for the dog. Also provide a cool area where the puppy can recover from exposure to heat.
Extreme cases require fluid treatment from a [veterinarian](http://www.ehow.com/how_2363197_care-dehydrated-puppy.html). Take the puppy to a vet immediately to prevent organ damage when the puppy does not drink water or improve within several hours.