← Argentine Black and White Tegu care guide
How Long Do Argentine Black and White Tegus Live?
Argentine tegus commonly live 15 to 20 years. They are intelligent, widely captive bred and genuinely tameable, and the thing that most often ends the relationship early is the size of the adult rather than the health of it.
Published lifespan figures
| Figure | Value | Notes |
|---|---|---|
| Commonly published | 15-20 years | The usual captive range |
| Captive-bred | Widely available | Unlike savannah monitors |
| Brumation | Several months annually | Normal for the species |
Checked September 20, 2026 against the sources at the foot of this page. Where sources differ the range is shown rather than averaged.
What actually shortens it
Published lifespans describe well-kept animals. The gap between the figure above and what a argentine black and white tegu actually lives is almost entirely husbandry, and these are the levers that matter most.
Obesity and fatty liver disease
Captive lizards burn a fraction of the energy wild ones do, and most published feeding schedules were written for growing animals. Adults fed on a juvenile schedule get fat, and fat lizards die early.
Metabolic bone disease
The leading husbandry cause of death in captive lizards, and a lighting failure more often than a diet one. UVB bulbs lose useful output within 6 to 12 months while still looking lit, and glass filters UVB out entirely.
Being rehomed once it outgrows the house
Not a disease, but for the large lizards it belongs here. Animals that outgrow their housing get passed on or surrendered, and each move is a real stressor. Rescues are full of these species.
Common questions
How long do Argentine tegus live?
Commonly 15 to 20 years in captivity. They are widely captive bred, which gives them a better starting point than the wild-caught species.
What shortens an Argentine tegu's life?
Obesity from overfeeding, UVB failure, and being rehomed once the adult outgrows the house. Tegus are among the more commonly surrendered large reptiles.
Do Argentine tegus brumate?
Yes, typically for several months annually. Reduced activity and appetite during that period is normal behaviour rather than illness, though it should be distinguished from genuine health problems.