For an animal to approach a fire, a powerful incentive must be employed. She was then beaten with long metal rods until she was screaming and bloody. She became so neurotic that she would beat her head against her small cage. She finally died. Horses, for example, are made to walk backwards on hind legs with heads tightly reined using severe bits, to make them arch their necks into a supposedly attractive, unnatural position.
Some animals are wild caught, others come from zoos and safari parks.
Circuses buy and sell animals between them. Some spend their entire lives, from birth until death, in captivity. Wild caught animals often die during trapping and transport. Older animals may be sold to smaller circuses or zoos. Some even find their way into research laboratories.