Porcupines kept in zoo settings require specific substrate for quill maintenance, gnawing enrichment, and appropriate social housing based on species-specific social tolerance.
Porcupine welfare in zoos requires attention to species-specific social and dietary needs. African crested porcupines tolerate and benefit from family group housing; North American porcupines are largely solitary and should be housed individually. Gnawing enrichment is a behavioral necessity — porcupines provided with branches, logs, and varied gnawing substrates spend significant time in this natural behavior, maintaining dental health and providing behavioral enrichment simultaneously. Digging opportunities are important for species that naturally burrow. Nocturnal activity patterns mean that porcupines in daytime zoo settings show reduced behavioral repertoire — nighttime feeding enrichment and nocturnal house formats better serve welfare and visitor experience. Quill condition and resting posture are practical welfare indicators that keepers can monitor without handling: relaxed porcupines hold quills flat, while stressed individuals may raise them at lower thresholds.