Some do and some don't. You'll just have to wait and see and make sure your husbandry is OPTIMAL.

You might want to consider a smaller enclosure where the animal is very cramped.

If the animal eats rats you might want to consider mice

Etc

Try everything in your power to see if their are changes, you may have a real picky eater just like you may have an animal that is more subject to husbandry or stress issue.