Monitor lizards including Nile monitors and water monitors are large, intelligent reptiles with complex behavioral needs that are frequently underserved in zoo and captive settings.
Monitor lizard welfare in zoo and private settings is frequently inadequate because their large size and activity requirements are underestimated. Small enclosures commonly provided for large monitors prevent the locomotion, environmental exploration, and thermoregulatory behavior that constitute basic welfare for these animals. Cognitive enrichment including puzzle feeders and environmental novelty engages their documented intelligence. Semi-aquatic species require authentic pool access for behavioral and health reasons. The monitor lizard pet trade is particularly problematic because wild-caught individuals show high mortality and chronic stress in inadequate private settings.