A couple of years ago I feed my gecko crickets, and they’re usually brownish in color but one of them was white. A few minutes later I went to see if he ate any of them. Then I saw that the white one was quashing the heads of the other crickets with his legs and in doing so killing them. My gecko was scared and I took him out and told my dad and he killed the white cricket. This has only happened once. Weird, huh?