Something is Eating my Ventrata's Leaves and Pitcher Hoods

[Nepenthes_Sturm]

I came back home from the dorm I was (I do this every weekend), and checked on my Nepenthes Ventrata. I find that something has been chewing on the leaves and the hood of the plant. Any clue to what this might be?

[coline]

Very difficult to know, but it doesn't seem it is of any harm. Usually slugs and snails are the most common chewers, since grasshopper would really do damage