I think what Tom is refering to here is mexicana that are reluctant to feed on domestic pinkies. My experience with a few hundred baby mexicana/alterna is that a basic shoebox with pine shavings, a tight hide, a water dish and a hotspot of 80-85 against a backround room temp of 60-75 is all they need for simple care. I live in a fairly humid coastal climate so for a really dry climate you may wish to add a moist hide. Under those conditions well over 90% of my baby mexicana/alterna will eagerly accept live baby lizards. About 5-20% will take uncented live or frozen domestic pinky mice. I think Tom is asking has anybody taken those few that take pinkies right off the bat and tried to breed for that trait.

Not to discount the value of proper environment but I think with the vast majority of mexicana it is a matter of prey preference.

Just for an experiment though I am going to set up a few naturalistc cages with deep substrates of various textures and humidities, multiple hides and a hot spot of 90 and see what happens.

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