Animals are harmed when used as objects of entertainment, no matter how innocent that entertainment is  The circus is another arena in which human beings abuse other animals. Animals are trained to perform tricks using whips, electronic goads, sticks, food-deprivation etc. Wild animals such as lions, tigers, and elephants are kept in shamefully inadequate conditions in tiny spaces. The necessity of regular transportation means that the circus can never provide an appropriate home for wild animals. These animals are forced to travel thousands of miles in cramped and squalid conditions and frequently end up physically and mentally ill. And what for? Purely for the entertainment of we arrogant exploitative humans. What sort of lesson does it teach our children about non-human animals to take them to the circus and see these great creatures demeaned and controlled by force to perform silly tricks?  Horses and dogs are among the principle victims of exploitation in human sporting activities. The main purpose of horse- and dog-racing is for human beings to indulge their penchant for gambling. The welfare of the animals involved is at best a secondary concern. Horses are frequently injured and die in horse races, especially races over hurdles such as the infamous British 'Grand National'; they are also blinkered and whipped to make them run faster, even the British Horseracing Authority has accepted the use of the whip needs to be limited out of concern for the welfare of the animals. [1] Or the Riverside (Washington)Suicide Race [2] [3] , where horse often die from the nearly 400 foot steep grade of the suicide hill, the riders trying to make it down and through a river. It is unconvincing to claim that the animals can enjoy being subjected to this. As for the conditions the animals are kept in, these may be good for the top dogs and horses, but in the main conditions are poor, and once the animals cease to win races they are likely to be neglected, abandoned, or slaughtered. Horses are also forced to take part in the dangerous contact sport of polo in which collisions and a hard, fast-moving puck pose serious danger to the animals who, unlike their riders, have no choice in whether they take part.  [1] British Horseracing Authority, ‘Whip use and specification’, 2011.  [2] Wikipedia, Suicide Race  [3] Nick Timiraos, ‘The Race Where Horses Die’.