Gertrude's Cat/Quick guide

Getting started

 * Talk to Gertrude.
 * Go behind her house and pick up a Doogle leaf.

The Hideout

 * In Northeastern Varrock Square, talk to Shilop or Wilough. Give them one hundred Coins.
 * Go to the Lumber Yard Northeast of Varrock.
 * On the West side of the lumber yard's fence, there will be a broken section. Squeeze under it.
 * In one of the buildings will be a ladder, climb it.
 * Try to pick the cat up, then use the bucket of milk on Gertrude's Cat.
 * Use the doogle leaf on the sardine.
 * Try to pick her up, then use a doogle sardine on her.
 * Try to pick her up.

Finishing Up

 * Climb down the ladder and there will be some Jiggling crates.
 * Search the crates until Three little kittens are found.
 * Use the kittens on Fluffs.
 * Return to Gertrude.
 * Quest complete!