what could have done this?!

[alec]

I just found my developing truncata pitcher gnawed on!
any ideas what would do this?
is there anything I should do about it?- others haven't been damaged yet so maybe not a big deal, but thought I'd check.
thanks,
Alec

 

[rattler]

im going with snail or slug........

 

[justjack]

Any chance of a better pic? It would help.