Top Definition. pi. The transcendental number which refers to the definition (in which it is multiplied by the radius of a circle) of the area of the circle. (or if multiplied by the diameter, defines the circumfrence). This is the first 50k digits of pi...to top that other guy's number.
Rectal prolapse is an uncommon condition in dogs in which rectal tissue protrudes through the anal opening. It appears as a tubular piece of tissue attached to the anus.The rectum is the part of the large intestine that ends just inside the anus.ogs and cats do not get hemorrhoids so any tissue that protrudes from the anus is abnormal. Try to keep the tissue moist with warm wet washcloths and do not allow your pet to lick or chew at the tissue. Keeping the tissue moist and free of trauma will give it the best chance of being repaired.
[See also: Cats and Dogs May See in Ultraviolet] Like the human retina, the canine retina contains other kinds of photoreceptors in addition to cones, called rods. These light receptors do not perceive color, but they are sensitive to light and dark changes, as well as shape and movement. And the ratio of rods to cones in the retina is much higher in dogs than it is in humans.