Captive Animals

Nocturnal Animal Welfare in Captivity

Nocturnal animals in zoos and laboratories are often housed under lighting conditions that disrupt their natural behavior and physiology.

Key Facts

Many zoos use reverse lighting to show nocturnal animals during visitor hours
Light at night disrupts circadian rhythms in all mammals studied
Nocturnal insects navigate by moonlight and are disoriented by artificial lighting
Melatonin disruption from artificial light affects immune function and reproduction

Welfare Considerations

Nocturnal animals in captivity whose activity cycles are reversed by artificial lighting may benefit from visitor engagement but face physiological costs from circadian disruption. Light pollution surrounding natural habitats affects nocturnal wildlife through navigation disruption and predation risk alteration. Welfare-positive approaches minimize light exposure for nocturnal species and use red or amber light with minimal behavioral disruption.

What You Can Do

Support zoos transitioning to welfare-based nocturnal exhibit design
Reduce outdoor light pollution in your property using motion-activated and directional lighting
Support light pollution reduction campaigns benefiting nocturnal wildlife
Avoid shining lights on nocturnal wildlife when outdoors at night