This is the Beasts of Fable Book 1 Legendary Ka'wi the Gorger. The quest can be picked up from Gentle Sans, located in the Shrine of the Two Moons at 60,23. For this Encounter were going to use ? Stitched pup, Crystal Spider, and any other fast spider with brittle webbing and swarm.
Ka'wi is faster so he is going to start off first. He will bounce between chew, super sticky goo, and mothballs. Whatever he attacks with doesnt really matter. Were using the Stitched Pup for 2 reasons. 1: He's undead, so when he dies he gets an additional round. And 2, he has howl. So start the round by dropping his DND, known as plauged blood. Continue the round with diseased bite spam. When he dies, and your in your additonal round, cast Howl, this will give us 2 rounds of 100% bonus damage. Flip into the Crystal Spider. Use brittle Webbing, and then the swarm. This is known as wowpetbattle.com's classic Spider Burn! No more gorging for Ka'wi.