Head to head
Texas Alligator Lizard vs Southeastern Five-Lined Skink
A Texas alligator lizard and a southeastern five-lined skink are both small, harmless lizards of the southeastern and south-central United States, yet they belong to entirely different lizard families and rely on very different survival strategies.
| Texas Alligator Lizard | Southeastern Five-Lined Skink | |
|---|---|---|
| Scientific name | Gerrhonotus infernalis | Plestiodon inexpectatus |
| Body armour | Rows of stiff, rectangular scales | Smooth, glossy scales |
| Identification challenge | Distinguished by genus and size | Nearly identical to 2 close relatives |
| Juvenile tail colour | Not notably blue | Vivid blue |
| Reproduction | Live-bearing | Egg-laying |
| Habitat | Rocky forest and grassland | Forest and sandy coastal habitat |
| Range | Central/southern Texas, NE Mexico | Southeastern United States |
| Conservation status | Least Concern | Least Concern |
Texas Alligator Lizard vs Southeastern Five-Lined Skink: common questions
Which of these two lizards is bigger?
The Texas alligator lizard is considerably larger, being the biggest species in the entire alligator lizard group, while the southeastern five-lined skink is a much smaller, more slender lizard typical of the skink family.
Why is the southeastern five-lined skink hard to identify?
It looks extremely similar to two close relatives, the common five-lined skink and the broad-headed skink, and reliably telling all three apart often requires counting scale rows rather than relying on colour or pattern alone, unlike the Texas alligator lizard, which is distinguished more easily by its size and armoured scales.
Do both of these lizards lay eggs?
No, the Texas alligator lizard gives birth to live young, while the southeastern five-lined skink lays eggs, a fundamental reproductive difference between the two despite both being harmless, insect-eating lizards found in similar rocky or leaf-littered habitat.