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.
Tortoiseshell cats can be one of many breeds. These include the American shorthair, the British shorthair, the Oriental shorthair, the Persian, the Siamese, the Burmese, the Turkish Van, the colorpoint shorthair, the European shorthair, the Birman, the American bobtail, the Japanese bobtail, the Norwegian forest cat, the Maine coon cat, the Cornish rex, the Devon rex, the American curl, the Manx and the somali cat.