Dallas Zoo recently welcomed their first ever clutch of Texas Horned Lizard hatchlings – 39 babies in all! Also known as “horny toads”, Texas Horned Lizards, were once quite common, but are now disappearing.
This threatened species has vanished in East and Central Texas, and is now decreasing in North Texas, too. While these babies may be only the size of a penny now, they’re helping ensure the survival of this Texas icon.
The Dallas Zoo has taken an active role in the protection of this threatened reptile. The Dallas Zoo's Texas Horned Lizard Conservation page (http://dzmconservation.wix.com/texashornedlizards#!) provides great information and resources.
Horned Lizards, also known as "horny toads", represent a unique group of lizards that inhabit the southern United States and northern Mexico. The Texas Horned Lizard, Phrynosoma cornutum, is perhaps the most recognizable species of Horned Lizard. It is the largest North American native species of Horned Lizard (Family: Phrynosomatidae) and has the widest distribution of any other Horned Lizard species in the United States.
Once extremely common, they are now in decline throughout much of their range. The Texas Horned Lizard is perhaps the most threatened member of this group, with estimated population declines of greater than 30% across its range (Texas, Oklahoma, Kansas, New Mexico, and northern Mexico) and even higher in Texas. Populations have disappeared in East and Central Texas, and are decreasing in North Texas as well.
Staff of the Dallas Zoo is studying the life history of Texas Horned Lizards at the Rolling Plains Quail Research Ranch. The Rolling Plains Quail Research Ranch is 4,700 acre preserve located in Fisher County, Texas. By collecting lizard life history data (including but not limited to population densities, habitat preferences, diet, sex ratios, activity patterns, etc.) they hope to shed valuable light on the ecology of this threatened native Texan.