Blue Tongue Skink vs Green Iguana

Side-by-side care comparison to help you choose.

Blue Tongue SkinkGreen Iguana
DifficultyBeginnerAdvanced
Adult size18-24 inches4-6 feet (1.2-1.8 m)
Lifespan15-20 years15-20 years
Min enclosure40 gallon / 48x18x18 inches (4x2x2 ft recommended)6 ft x 3 ft x 6 ft (1.8 x 0.9 x 1.8 m) for an adult
Basking temp95-105°F95-105°F (35-40°C)
Humidity40-60% (higher for Indonesian species)60-80%
UVBYes - T5 HO 5.0 or 6% UVB (Ferguson zone 2-3)Yes - T5 HO 10.0 to 12% UVB, Ferguson zone 3-4
DietOmnivorous: insects (crickets, roaches, worms), dark leafy greens, vegetables, and occasional fruit or snail. Juveniles daily, adults every other day.Herbivorous: 70% dark leafy greens (collard, mustard, dandelion), 20% vegetables (squash, bell pepper), 10% fruit (berries, mango) as treats. Feed daily for juveniles, every other day for adults.