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 23 Cutest Dog Breeds Youâve Never Even Heard Of. We found the 23 most adorable dog breeds that you've never even heard of. These pups may not be a crowd favorite, but they definitely deliver in the cuteness department. Dogs Bred to Hunt Dogs were bred for plenty of reasons, coveted for size, coloration and other factors.