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Unlock the killer secrets and ingenious tactics of nature's toughest fighters in four incredible ecosystems around the world. Wild gladiators, from the smallest ants to the biggest bears, do battle for the ultimate prize: survival.
As the dry season brings a band of gladiators to an African savannah watering hole, see a territory brawl and one honey badger's risky dance with a snake.
Go up against Australia's wiliest gladiators and their arsenals, from a kangaroo's deadly boxing moves to the redback spider's precision-engineered traps.
Young gladiators earn their stripes in dense tropical forests. Stand back as a poison dart frog launches a toxic barrage and observe a jaguar-caiman turf war.
Head to America's far north for a peek at its waterway's fighters, as a spring thaw pits eagles against herons and dragonfly nymphs against venomous water bugs.
