Black tree monitors are an arboreal species that can get 3-4’ native to Indonesia. Due to their size and active nature they will need a large enclosure. Black tree monitors can live 10-20+ years making them a big commitment pet. These monitors are for the experienced keeper as When startled, their primary instinct is to flee rather than fight. If handled carelessly or cornered, they will defend themselves with quick bites and sharp claws. While they can be shy or flighty, When properly raised, they can become accustomed to your presence and tolerate you more being around them.