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 Singapura. The Singapura is considered to be the smallest overall breed of cat in the world, with most cats of the breed being as much as half the size of the average cat. The Singapura has a petite, delicate body with long ears and big eyes.They are very active and playful, and love to climb!ther small crossbreed and experimental small breed cats. All of the five cats listed above are recognised as formal breeds with at least one of the worldâs governing feline authorities, such as the Governing Council of the Cat Fancy (GCCF) here in the UK.