Sinaloan milk snake
The Sinaloan milk snake inhabits the rocky and semi-arid drylands of southwest Sonora , Sinaloa , and southwest Chihuahua ( Mexico ) . 
<triplet> Sonora <subj> Chihuahua <obj> shares border with <subj> Mexico <obj> country <triplet> Sinaloa <subj> Chihuahua <obj> shares border with <subj> Mexico <obj> located in the administrative territorial entity <triplet> Chihuahua <subj> Sonora <obj> shares border with <subj> Mexico <obj> country <triplet> Mexico <subj> Sonora <obj> contains administrative territorial entity <subj> Sinaloa <obj> contains administrative territorial entity <subj> Chihuahua <obj> contains administrative territorial entity