Yeah I know exactly what you're talking about, I was researching them before feeding them to my frog and came upon a gecko forum where the person had left a few in there with him and he woke up the next day to find his gecko eaten. I'm not sure if it was a gecko forum or a chameleon forum, one of the two. I feed my pixie in a separate feeding bin with the crickets, the crickets are well fed so they haven't been aggressive towards my frog. The jamaican field crickets I had didn't seem as aggressive as people were making them out to be from what I saw, but they were a lot more nasty and big looking. I heard they can even draw blood sometimes from their bites when their full adults. I still watch to make sure, but I take him out and put him back into his tank after he's done so it's all good.