Wild animal acts in circuses have declined significantly as countries ban the practice; the welfare costs of travelling confinement, training methods, and performance stress are now well-documented.
Circuses present a compounded welfare challenge: the chronic stress of travel and confinement in inadequate quarters is added to the acute stress of performance. Historical reliance on dominance-based training creates fear states that persist even without overt punishment. The entertainment value cannot be ethically balanced against systematic welfare compromises that affect animals throughout their working lives.