← Argentine Black and White Tegu care guide
How Big Do Argentine Black and White Tegus Get?
Male Argentine tegus reach 4 to 4.5 feet and females 3 to 3.5, commonly weighing 10 to 20 pounds or more. Their well-earned reputation for tameness does nothing to reduce the enclosure they need.
Published adult size figures
| Figure | Value | Notes |
|---|---|---|
| Adult males | 4-4.5 ft | Published range |
| Adult females | 3-3.5 ft | Smaller |
| Weight | Commonly 10-20 lb or more | Heavy-bodied |
Checked September 20, 2026 against the sources at the foot of this page. Where sources differ the range is shown rather than averaged.
Getting there
Fast, and the endpoint is large
They grow rapidly, reaching a substantial size within a few years. The housing requirement arrives faster than with most reptiles.
Males end up noticeably larger
With pronounced jowls in mature males.
What that size means in practice
A room-scale enclosure
Commonly cited adult minimums start around 8 by 4 feet and many keepers build larger. This is a custom build, planned before the animal is bought.
Tameness does not reduce the space requirement
Tegus are genuinely responsive and often described as dog-like, which leads people to under-plan the housing. A tame 20-pound lizard still needs the floor area.
Common questions
How big do Argentine tegus get?
Males reach 4 to 4.5 feet and females 3 to 3.5, commonly weighing 10 to 20 pounds or more. They are heavy-bodied lizards rather than long thin ones.
How much space does an adult tegu need?
Commonly cited minimums start around 8 by 4 feet of floor space, and many keepers build larger. It is a custom enclosure, and it should be planned before buying a hatchling.
Are tegus tame enough to free-roam?
They are genuinely responsive and often described as dog-like, but tameness does not replace an enclosure. Supervised time out is not a substitute for adequate housing.