Wild animals in circuses endure constant travel, barren temporary housing and performance training that is incompatible with their complex physical and psychological needs.
Wild animals in circuses spend 95-99% of their time confined in transport cages or temporary enclosures that deny virtually all natural behaviour. Training methods historically relied on dominance and punishment. The constant movement prevents establishment of stable social bonds or territorial ranges. Even where modern training uses positive reinforcement, the fundamental housing inadequacy remains. Circuses work perfectly well without wild animals.