As we welcome the warmer months here in Arizona, it's not uncommon for you to encounter a lizard or two enjoying the sunshine in your backyard. If you stare at them long enough you'll spot them ...

A genetically distinct population of Yarrow's spiny lizard in Arizona's Mule Mountains is facing local extinction due to climate change. Conservationists have petitioned to list the lizard as a ...

The effect of competition on the demography of two coexisting lizards, the striped plateau lizard (Sceloporus virgatus) and the tree lizard (Urosaurus onatus), was studied experimentally in the ...

Competition for resources between sympatric species can result in reduced fitness. Resource partitioning allows the minimization of competitive pressures, consequently promoting the coexistence of a ...