Caimans and other crocodilians are increasingly featured in zoo reptile collections, with welfare requirements that differ substantially from popular perception.
Caiman welfare in captivity hinges on temperature management, space, and appropriate social conditions. As ectotherms, caimans cannot generate their own body heat — enclosures must provide precise thermal gradients allowing behavioral thermoregulation. Inadequate basking temperatures cause immune dysfunction and digestive failure. Water quality is critical — caimans in poor water develop skin infections and respiratory disease. Despite their stoic appearance, caimans show behavioral indicators of stress including excessive hiding, escape attempts, and abnormal activity patterns. Space constraints prevent natural territorial behavior. Social groupings must balance natural tolerance with aggression management — caimans can inflict serious injuries on conspecifics. The long lifespan of captive caimans means welfare failures accumulate over decades. Public perception that crocodilians are "primitive" and insensitive to suffering is not supported by their complex neurobiology.