What animal would win in a fight between a?

THE ULTIMATE WILDCAT FIGHTING TOURNAMENT
tiger - winner v.s loser - leopard
lynx-winner v.s loser-cougar
lion-winner v.s loser-mt.lion
bobcat- loser v.s winner -cheetah
tiger winner fights loser lynx
lion winner fights loser cheetah
CHAMPIONSHIP
TIGER
FIGHTS
LION
THE CHAMPION IS THE.........................
TIGER
An elephant could probably beat an earthworm.