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 Ragdoll is one of the most popular longhair cat breeds. Social and loving, this cat enjoys people and gets along well with children and dogs. The desire to be near her family has earned her the affectionate nickname âpuppycat.â The Ragdoll can be taught to fetch and come when called. Playful throughout their lives, these cats mature slowly in three to four years.