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.
Whether you're in the market to adopt a super cute fish, or you think you might want a fish but want to do some breed research first, you've come to the right place. Below are the Top 100 Fish breeds on Cuteness.com. Check back often because these fishies change all the time. 1  animal breeds.  bird breeds.