Alright well I changed the substrate in my aramadillo lizard cage with black sand (the old substarate was woodchips) it says to chemical or dyes added I washed the sand before placing it and drying it. When I placed it clean the cage and all and put the lizards back they were being really werid like if they were metally challege. There eyes got really big the kept trying running up the glass like mad attacking the water bowl. I pretty sure its jsut there behavior with the new substrate but what got me was that my male kept licking the sand. can anyone explain that?