Giant grub

A giant grub is a creature that looks like a foot-long maggot, slimy, white, and writhing. In 1996, Rubeus Hagrid had many of these creatures and placed them inside a large barrel and used them as food for his pet acromantula, Aragog.

Appearances

 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Deathly Hallows