A severed cat's head.
Isaac is traumatized with a wide eyed stare.
Increases Damage and the size of tears as well as the knock back inflicted on enemies. The damage stat is increased by 0.5 and multiplied by 1.5.
This is essentially the same item as Max's Head from the original game; The Binding of Isaac.
Cricket's head is based on Cricket, one of Edmund's cats.