Penguins are popular zoo animals but face welfare challenges from inappropriate temperature management, shallow pool design, and disruption of natural social and reproductive behaviours.
Penguin welfare in zoos is strongly influenced by exhibit design. Shallow pools that prevent natural diving behaviour cause frustration and stereotypic pacing. Thermal management failures cause heat stress in polar species and cold stress in temperate ones. Inadequate social group size disrupts colony bonding. Reproductive failure in colonies can signal chronic stress. Best-practice penguin welfare requires deep pools enabling full swimming speeds, appropriate thermal environments, species-correct group sizes, and enrichment simulating natural foraging. Regular welfare assessments using validated indicators help identify poor welfare early.