Agility
Dog agility is a dog sport in which a handler directs a dog through an obstacle course in a race for both time and accuracy. Dogs generally run off-leash with no food or toys as incentives. The handler can touch neither dog nor obstacles, except accidentally. Consequently, the handler's controls are limited to voice, movement, and various body signals, requiring exceptional training of the animal.
Agility Videos

Disc dog
Disc dog is the more generic name for what is commonly called Frisbee dog. In disc dog competitions, dogs and their human disc throwers compete in events such as distance catching and somewhat choreographed freestyle catching. The sport celebrates the bond between handler and dog, by allowing them to work together. The term "disc" is preferred because "Frisbee" is a trademark (held by Wham-O) for a brand of flying disc.
Disc Dog Videos

Dock Jumping
Dock jumping is a dog sport in which dogs compete in jumping for distance or height from a dock into a body of water.
A team consists of one dog, of any type or size,or age, and usually one handler. Dogs must be over 6 months of age to compete. Handlers may use a toy, also known as the chase object. The dogs are not required to chase or retrieve the toy.
Dock Jumping Videos

Flyball
Flyball is a dog sport in which teams of dogs race against each other from a start/finish line, over a line of hurdles, to a box that releases a tennis ball to be caught when the dog presses the spring loaded pad, then back to their handlers while carrying the ball.
Flyball is run in teams of four dogs, as a relay. The course consists of four hurdles placed 10 feet (3 m) apart from each other, with the starting line six feet (1.8 m) from the first hurdle, and the flyball box 15 feet (4.5 m) after the last one, making for a 51-foot (15.5 m) length. The hurdle height is determined by the shoulder height of the smallest dog in the team. Under current North American Flyball Association (NAFA) rules this should be 4 inches (10 cm) below the withers height of the smallest dog, to a height of no less than 7 inches (20.3 cm) and no greater than 14 inches (40.6 cm). Each dog must return its ball all the way across the start line before the next dog crosses. Ideal running is nose-to-nose at the start line. The first team to have all four dogs cross the finish line error free wins the heat. Penalties are applied to teams if the ball is dropped or if the next relay dog is released early.
Flyball video

Weight pulling
Weight pulling is a dog sport involving a dog pulling a cart or sled loaded with weight a short distance across grass, carpet, or snow. Many breeds participate in this sport, with dogs being separated into classes by weight. Sleddog and pit bull breeds excel within their respective weight classes, having been historically bred to pull sleds and plows, respectively.
The dog is hitched to the sled with a specially constructed harness designed to spread the weight and minimize the chance of injury.
Dog weight pulling competitions are sanctioned by various non-profit organizations. In North America the International Sled Dog Racing Association has sanctioned contests in association with their races. The International Weight Pulling Association was organized in 1984 to promote the heritage of the working dog.
Weight pulling video