Kibler's Bits

Kibler's Bits is a consumable given to combat pets. It previously increased the pet's Strength and Stamina by 20 for 1 hour and then increased happiness, but now makes your pet larger.

Source
Kibler's Bits are crafted by cooks with a skill level of 300. This requires a Cooking Fire.

You have a chance to get from The Rokk's daily cooking quests.

Trivia

 * Kibler's Bits is a direct reference to "Kibbles 'n Bits", a brand of dog food.
 * The tagline "Pet tested, hunter approved." is a play on "Kid tested, mother approved" from Kix cereal.

Also see

 * Sporeling Snack
 * Spiced Mammoth Treats