Physiology. Amylase is a calcium dependent enzyme which hydrolyzes complex carbohydrates at alpha 1,4-linkages to form maltose and glucose. Amylase is filtered by renal tubules and resorbed (inactivated) by tubular epithelium. Active enzyme does not appear in urine.
The prostate is an accessory sex gland that surrounds the urethra and neck of a male dog's bladder. The prostate gland produces a fluid that helps nourish and transport sperm. Benign prostatic hyperplasia is a condition in which the prostate gland is enlarged. The word hyperplasia means increased in size.
During the estrus or heat stage of her estrus cycle, her urine contains pheromones and hormones, both of which signal her reproductive state to other dogs. This is the reason that dogs in heat will attract other dogs, particularly males.