The problem is more than floor space
Iguanas can compete visually and behaviorally across climbing routes, basking areas, feeding sites and retreats.
Maturity changes the equation
Breeding-related and territorial behaviors can become more pronounced as animals mature, so juvenile tolerance does not guarantee adult compatibility.
Observation must be proactive
Waiting for obvious injuries is too late. Persistent displacement, inability to bask or feed normally and chronic defensive displays can signal an unsuitable social arrangement.
Species-specific professional advice
Because welfare and injury risk are involved, housing decisions should be discussed with an experienced reptile veterinarian or qualified herpetoculture professional who can evaluate the actual animals and enclosure.
Keep exploring
Iguana facts become more useful when anatomy, behavior, species and habitat are connected instead of treated as isolated trivia.
Sources & further reading
Core factual claims on this page were checked against these references.