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 Siberian cat is very exotic, but itâs kittens are adorable. A cat with a big personality and a big popularity in many parts of the world, their kittens are a big part of the reason that so many people adore this breed.
You might be surprised that many of the most popular breeds of cats originated in the United States. Here's a roundup of 10 cat breeds with American roots. Maine coon. The official state cat of Maine, this gentle giant is one of the largest cat breeds, weighing up to 18 pounds. In fact, it's so big that some folks once believed it was a cross between a cat and a raccoon, hence the breed's name.