Vasopressin (Antidiuretic Hormone). Vasopressin (arginine vasopressin, AVP; antidiuretic hormone, ADH) is a peptide hormone formed in the hypothalamus, then transported via axons to, and released from, the posterior pituitary into the blood. AVP has two principle sites of action: the kidney and blood vessels.
The Face That Launched 1,000 Awws. Like a tiny feline fashion model, this Persian kitten seems to know how to tilt her head just so. And wow, her eyes are stunning. It's no wonder that the Persian is one of the most popular cat breeds in the United States, according to the Cat Fanciers' Association.
The Adoptable Great Pyrenees Mixes. Puppy Breed: German Shepherd Dog / Great Pyrenees. These puppies will grow up to be nice and large. They are so beautiful and exhibit many signs of Great Pyrenees. Typical of a Pyrenees mix is the dark spot on the middle of the tail and the black spots on the belly. The mother really looks half German Shepherd and might have Lab in the other half.