In the most well known form there were purpose built arenas for the entertainment, called in England bear-gardens, consisting of a circular high fenced area, the pit, and raised seating for spectators. A post would be set in the ground towards the edge of the pit and the bear chained to it, either by the leg or neck. The dogs would then be set on it, being replaced as they tired or were wounded or killed. For a long time the main bear-garden in London was the Paris Garden at Southwark.
In England, from the 16th century, many "herds" of bears were maintained for baiting. Henry VIII was a fan and had a pit constructed at Whitehall. Elizabeth I was also fond of the entertainment; it featured regularly in her tours. In 1575 a baiting display for her had thirteen bears, and when an attempt was made to ban baiting on Sundays she over-ruled Parliament. A variation was "the whipping of a blinded bear" and certain other animals were also baited, especially bulls but also on one curious occasion a pony with an ape tied to its back was baited and a spectator described that "...with the screaming of the ape, beholding the curs hanging from the ears and neck of the pony, is very laughable". With bulls, the animal's nose was usually blown full of pepper to enrage the animal before the baiting. The bull was often allowed a hole in the ground, into which to thrust his vulnerable nose and lips. A variant of bull-baiting was "pinning the bull"; specially-trained dogs would be set upon the bull one at a time, a successful attack resulting in the dog fastening his teeth strongly in the bull's snout.
Attempts to end the entertainment were first made in England by the Puritans, with little effect. But by the late 17th century "the conscience of cultivated people seems to have been touched", but it was not until 1835 that baiting were prohibited by Parliament, a ruling that was soon extended across the Empire. Baiting is banned worldwide but can still be found in parts of the Middle East and Pakistan.
The term is also used for the hunting practice of luring a bear with food, bait, to an arranged killing spot.
-- This describes what I feel politicians have done to Terri Schiavo. It is simply evil to compound this tragedy and suffering for political gain. But then, from a group that has asked for (and received) legal opinions allowing torture, why would I be surprised that they would extend tragedy and suffering just for political gain?
God will not be mocked, and there will be Hell to pay.