I have a spider and it needs to be forced fed. I do the following and it seems to work. I place a small pinky or fuzzie mouse and shove it in its mouth. Next I push the head and lower jaw together. The teeth seems to keep the rodent in the mouth. I tried this before and she managed to roll it out. Now she tries to roll it out but then she chews it and eat it. And swallows it down. I love it!