23 January 2014
10 extra Energy when reviving from a Zombie state
Slower Energy drain
Treasure for Upgrading to Level 8
Brain Gum is widely considered the best A-grade Pet. It is an ideal pet for players who want to run for a long time (such as when farming for Mystery Boxes, but lack certain Potion-producing S-grade pets. It is currently one of three Pets that slow down Energy drain, the others being Green Apple Rabbit, and Uncooling Teacup.
Slows down Energy drain.
Blows fantastic bubbles and improves Cookie's IQ to enable them to use up Energy slower.
Possible Combination Bonus Edit
Zombie Cookie 10 extra Energy when reviving as a Zombie
July 10, 2014
December 18, 2014
Brain Gum used to have helped drain energy 10-32% slower, but it was modified in December 18, 2014 with the New World update, making the pet more inferior to Green Apple Rabbit.
Brain Gum is one of the pets which can be spotted in-game. It appears in stage 2 encased in a glass jar.
Its best combo for Zombie Cookie was believed mainly because from popular culture, zombies love eating brains.
It used to be a combi bonus with Cream Cookie.