It seems your pumpkin has attracted a friend! It looks to be a pumpkin fiend, one of the few creatures of the veil known to predate on enchanted and normal pumpkins. They're especially a nuisance around the Thirteenth Year, when children are often woken up to the sight of their precious work half eaten and smashed on the doorstep after Hallow's Eve has passed. Some very creative individuals also try to use them as an excuse to hide their own pumpkin destroying tendencies...