Quick answer
Gila Monsters (Heloderma suspectum) are reptiles found across North America. One of the few venomous lizards. Adults typically weigh roughly 0.7 kg (2 lb), reach speeds of up to 2.4 km/h (1 mph), and live 20+ years. They feed on carnivore and are listed as Near Threatened on the IUCN Red List. Deserts and scrubland of the southwestern United States and northwestern Mexico.
Key takeaway
Gila Monsters (Heloderma suspectum) are reptiles found across North America. One of the few venomous lizards. Adults typically weigh roughly 0.7 kg (2 lb), reach speeds of up to 2.4 km/h (1 mph), and live 20+ years. They feed on carnivore and are listed as Near Threatened on the IUCN Red List. Deserts and scrubland of the southwestern United States and northwestern Mexico.
Gila Monster overview
Gila Monster (Heloderma suspectum) is a reptile listed here as Near Threatened. Typical weight about 0.7 kg; lifespan around 20+ years.
Gila Monster ecology
Diet: Carnivore. Habitat: Deserts and scrubland. Movement and social systems reflect those pressures across the native range.
Gila Monsters and people
Learn before you travel or keep related pets. Wild gila monsters are not toys; captive care needs species-specific husbandry.
Status and further reading
Conservation label in our guides: Near Threatened. See the full Gila Monster profile for taxonomy, FAQs, and related topic guides on this site.
Range and habitat
Gila Monsters inhabit Deserts and scrubland of the southwestern United States and northwestern Mexico. Their preferred habitat includes deserts and scrubland, where they find food, shelter, and breeding sites. Population density varies with prey availability, water access, and human disturbance. Protected areas and intact corridors remain essential for long-term persistence across North America.
Physical characteristics and behaviour
Adult gila monsters typically measure about 0.5 m in length and weigh roughly 0.7 kg (2 lb). They can sprint at up to 2.4 km/h (1 mph) when hunting or escaping predators. Gila Monsters are known for one of the few venomous lizards — social structure, daily activity, and seasonal movements all reflect pressures in their native environment.
Sources
Gila Monster FAQs
What are key facts about gila monsters?
Gila Monsters (Heloderma suspectum) are reptiles found across North America. One of the few venomous lizards. Adults typically weigh roughly 0.7 kg (2 lb), reach speeds of up to 2.4 km/h (1 mph), and live 20+ years. They feed on carnivore and are listed as Near Threatened on the IUCN Red List. Deserts and scrubland of the southwestern United States and northwestern Mexico.
What is the scientific name of the gila monster?
Heloderma suspectum — used in research and conservation listings for gila monsters.
What do gila monsters eat?
Gila Monsters are described as carnivores, with seasonal and regional variation in Deserts and scrubland.
Where do gila monsters live?
They are associated with Deserts and scrubland. Local presence depends on food, cover, and human land use.
What is the conservation status of gila monsters?
Listed in our guides as Near Threatened. Check the IUCN Red List and national assessments for the latest formal category.