They are found on Doogle Bushes on the ground south of Gertrude's house (just west of Varrock)
You find all the quests in the quest list, click on the quest tab.
(You MUST be a RuneScape Member to complete this quest)Do part of the "Creature of Fenkenstrien" quest *not sure how it's spelled but you start it in Canfis.During the quest you'll find out where they are, it's a bit difficult to explain.
Zanaris after completing the "Lost City" quest
In a rock
You get one from the "Rune Mysteries" quest as a reward.
This is for a quest, I am sure of. I recommend, tip.it and runehq.com
Recipe 4 diaster (p.s.) you'll find out
Finish the quest "Demon Slayer
During the quest: Creature of Frenkenstrain, you find an underground cavern that is full of them... I highly recommend the quest for anyone who wants to do experiments!
You find cats in Runescape by either looking at other people's pets, or doing the quest "Gertrude's Cat" and buying one yourself.
You will have to find out on the day, like everyone else.
you can use http://www.zybez.net/ or the quest helper on runescape.com I'd choose zybez as with the runescape quest helper you only get so many hints. with zybez.net's quest guides you can get the quest done in a very small amount of time.