you have to get it through alchemy

you need to make a slood, gooey gear, and slime earings

Sam Husson has: Played Slood in "The Legend of William Tell" in 1998. Played Bertie Milton in "A Twist in the Tale" in 1998. Played Top Hat in "The Tribe" in 1999. Played Thug 5 in "Dark Knight" in 2000. Played Young woodcutter in "Dark Knight" in 2000. Played Vortex in "Atlantis High" in 2001. Played Neville in "The Strip" in 2002.

First you need to make two items of slime gear.

Pointy Hat + 3x Slimedrop = Slood,

Garish Garb + 3x Slimedrop = Gooey Gear,

(Some places say you need Slime Earrings too - I have not found that to be necessary)

Equip them onto your main character and run around Angel Falls, battling slimes. Your main character must strike the killing blow. After a while, one slime will reveal itself as the pet you are searching for, head back to the quest giver to complete the quest.