Giant & Super Giant Leopard Gecko: Size Guide [2026]

What Are Giant Leopard Geckos?

Giant leopard geckos are a size morph created by Ron Tremper through selective breeding in the early 2000s. Unlike most morphs that affect color or pattern, the giant gene affects the overall body size of the gecko.

The giant gene is co-dominant, meaning the number of copies the gecko carries directly affects how large it grows:

• One copy (heterozygous) = Giant — larger than normal but not maximum size
• Two copies (homozygous) = Super Giant — the largest leopard geckos available

Size Comparison

The table below compares normal, giant, and super giant leopard geckos at adult size (18+ months old):

Note that weight alone does not determine giant status — an overfed normal leopard gecko can weigh as much as a giant. True giants and super giants are longer and have a larger frame, not just more body fat.

How to Identify a True Giant

Since overweight normal geckos can appear large, here are the markers of a true giant:

1. Length — measure snout to tail tip. A true giant should be at least 10 inches at maturity.
2. Frame size — giants have wider heads and thicker bodies proportionally, not just more fat.
3. Growth rate — giant hatchlings grow noticeably faster than normals in the first 6 months.
4. Lineage — the only way to confirm giant genetics is through documented parentage from a reputable breeder.

Hatchlings cannot be visually confirmed as giants at birth. Weight at hatching and early growth rate provide clues, but reliable identification requires waiting until 6-12 months of age.

Growth Timeline

Giant and super giant leopard geckos follow a similar growth timeline to normals but with accelerated gains:

• Hatchling (0-1 month): 3-4 grams, 3-4 inches
• Juvenile (1-3 months): 15-30 grams, rapid growth phase
• Sub-adult (3-8 months): 40-70 grams, size differences become visible
• Young adult (8-12 months): 70-100+ grams, approaching adult length
• Adult (12-18+ months): Full size reached, 80-150+ grams depending on type

Provide ample food during the growth phase. Giant juveniles may eat more than normal juveniles due to their faster growth rate.

Genetics and Breeding

The giant gene is co-dominant, making breeding outcomes predictable:

• Giant x Normal = 50% giants, 50% normals
• Giant x Giant = 25% super giants, 50% giants, 25% normals
• Super Giant x Normal = 100% giants
• Super Giant x Giant = 50% super giants, 50% giants
• Super Giant x Super Giant = 100% super giants

The giant gene combines freely with all other leopard gecko morphs. Popular combinations include Giant Tremper Albino, Giant RAPTOR, Giant Mack Snow, and Giant Blizzard.

Housing and Care Considerations

Giant and super giant leopard geckos benefit from slightly larger enclosures than normal geckos:

• Minimum enclosure: 40-gallon breeder tank (36 x 18 inches) for adults — the standard 20-gallon may feel cramped for super giants
• Hides — ensure hide openings are large enough for the gecko to enter comfortably
• Feeding — adults may need slightly more food than normals, but be careful not to overfeed; obesity is still a risk
• Temperature and humidity — identical to normal leopard geckos (88-92F warm side, 75-80F cool side)

Pricing and Availability

Giant leopard geckos are available from specialty breeders and occasionally at reptile expos. They are not commonly found at pet stores.

• Giant (single gene): $150-$400 depending on morph combination
• Super Giant (homozygous): $300-$600+ depending on morph combination
• Giant combo morphs (e.g., Giant RAPTOR, Giant Blizzard) command premium prices

Always buy from breeders who can document the giant lineage. Without documentation, there is no way to verify that a large gecko is genetically giant rather than simply well-fed.