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.
What should be remembered is that not all small cat breeds are miniature cats. The Singapura is the smallest cat of the registered cat breeds, but does not qualify as a miniature cat. Teacup cats are available in a variety of breeds and are simply put, small miniature cats.These small cat breeds are usually only about 9 inches high when they are mature.he Small Cat Breeds of the World. A number of small cat breeds exist and can be broken down into different groups-the dwarf cats, the miniature cats and the teacup cats. These cats are sometimes referred to as pocket cats or toy cats..