You said you "had to buy" the more expensive food. I assume because you have larger snakes, and they require larger foods. I see no problem with that at all. But in the case of the pixie, he could have gotten a large amount of food for the amount chameleon cost. So if anything, it just seems a waste, and that's why I mentioned cost. It's not like he had to spend that much on one meal for his pet.

And I had no problem watching a frog eat a lizard. I grew up watching Discovery. It's just the mistreatment of a pet that bugs me.