As or you not being a novice keeper??? Most herp guys Know this about horned lizards,,,,,,,, HARVESTER ANTS !!!!!!!!!!!!!!!!!!!!!!! they will die without them even if they are eating crickets, phoenix worms, whatever, I beleieve its the formic acid or somthing like that that they need. LLLReptile had some for sale last time I checked. Also U.V. seems to be very important to horned lizards.
-----
Ricky

