I see so they can be on an individual basis. Have you ever tried scenting with a frozen toad? I think those axanthic Mexican hogs are truly amazing looking. Albinos are cool but ive always been a big fan of the grey and white stuff. Thanks a bunch Frank. I would be interested in trying those out if u ever part with any Also great job with the field studies that you do. That is how we better understand the different species that we work with. Justin Mitchem told me of a book maybe call the evolution or field study of heterodon nasicus in the 1950ish era. herd it is a great read but cant find it any where. anyone else heard of this book and where to find it?