Water
Water is paramount to any dog's health!
Why? Water helps to carry nutrients to and from the cells of the body, aiding in the absorption of nutrients and proper digestion. Fluids also help to improve cognitive function, regulate body temperature, lubricate joints, and even aid in cushioning the brain and spinal cord.
Dogs absorb water through three main means:
Drinking water
Water in their food
Metabolic water
It is important for a pet owner to know the many signs of dehydration as it is associated directly with a decline in their physical and neurological health. When you start to notice your dog experiencing any of these symptoms, you should immediately contact your established veterinarian:
Loss of appetite
Vomiting
Heavy panting
Lethargy
Dry nose/eyes
Spikes in allergy responses

Just like water is crucial to our health, it's just as important to theirs!
Photo credit: Dog Photographer of Tampa Bay