Blue Spiny Lizard
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Blue Spiny Lizard


Found from southern Texas to Mexico


This lizard inhabits rocky hillsides and shrublands.


This lizard is covered in large, keeled scales. There is a black collar-like marking around the neck, edged in white. Mostly brown, with some blue at the shoulders. Males have as blue throats and side blotches on the belly, and may be lightly blue on the back. The tail is longer than the body.

Blue Spiny Lizard

Blue spiny lizards are diurnal, meaning they are mainly active during the day. In territorial and mating disputes, males will bob their heads quickly as a dominance display. If head bobbing does not solve the dispute, males will flatten their bodies and turn sideways to display the blue patches on their bellies.


Ovoviviparous; females give birth to 6 to 18 small lizards. The baby lizards are about 2 inches long.

Interesting Facts:

Blue spiny lizards are iguanids, meaning they belong to the group of lizards most closely related to iguanas. Iguanids are common in North and South America, but in Asia, most lizards are agamids.

Blue Spiny Lizard

Spiny lizards and fence lizards are very common throughout the western United States, and often-encounter people. While it is true that a lizard can drop its tail to get away from a predator or a person trying to catch it, this can still be harmful to the animal. Lizards store fat in their tails to make it through times of the year when they can’t find much food. A lizard that loses its tail may not have enough “food storage” to make it through the winter. It is always best to leave wild animals alone.

Did YOU Know?    
The blue spiny lizard is the largest of the spiny lizards.
Blue Spiny Lizard
Class: reptiles
Order: Squamata
Family: Phrynosomatidae
Genus: Sceloporus
Species: serrifer cyanogenys
Height: Up to 14 inches with tail
Wild Diet: Flying insects and other small invertebrates
Zoo Diet: Crickets and mealworms
Where at the Zoo? Small Animal Building

Learn more about reptiles or animals from North America!
Or, cross-reference the two!