Kitten

A kitten is a pet players can receive from the quest Gertrude's Cat. Additionally, if the player has completed the Icthlarin's Little Helper quest, he or she will have an Amulet of Catspeak. It is possible to have a conversation with any type of kitten or cat while wearing this amulet. When the player drops the kitten, it will follow that player around. If the player runs too fast for your kitten, it will reappear right next to him or her once it goes off of the mini-map. It appears as a Pet kitten whilst in your inventory.

After every few minutes of the kitten following the player around, the character will say "I think it's hungry." Then, the player will have to feed it a fish (cooked fish is fine) or a bucket of milk. If the player doesn't feed it, the character will say "I think it's really hungry." If the player still neglects to feed it, it will run away.

If a player tries to use an Alchemy spell on a kitten, it says "I can't use that on a defenceless kitten!"

If players right click the kitten then clicks interact, they can stroke the kitten, shoo the kitten, or chase vermin. If players click "stroke", then they will pet the kitten and give it attention. If the player clicks "shoo", he or she will shoo away the kitten and lose it forever. If the player clicks "chase vermin", your kitten will kill a nearby rat, if there is one. However, kittens have a hard time catching rats (roughly a 15% success rate). After 2-4 hours, the kitten will become a cat, which are much better at catching rats (roughly a 70% success rate). Players can train their Kitten or Cat at the Rat Pits and can also challenge other players there.

Eventually it will become an overgrown cat, which is unable to catch rats. However, once it becomes an overgrown or a regular cat, it can be sold in West Ardougne for 100 death runes.

Players who want a Wily cat can earn one by completing the Rat Catchers quest. This also allows a player to name the cat. However, the cat must continually chase rats, butterflies, or kalphite larvae, or else it'll become a Lazy cat. Lazy cats can be retrained to their former wily selves by chasing rats.

Also, if the player wants another kitten, he or she can get one from Gertrude for 100 coins, but only if they don't have any kittens or cats already (Overgrown, Wily, or Lazy cats are exceptions). Wearing the Ring of Charos allows the player to choose the colour of the kitten.

You can give your kitten a ball of wool to play with, with which it will toss it in the air, and paw it around.

Hell-kitten
Hellkittens can be obtained after starting the Evil Dave section of the Recipe for Disaster quest. To turn a kitten into a Hellkitten, the player should take the kitten to the basement in the house of Evil Dave's Mother and have the kitten "Chase Vermin". After it has killed a sufficient amount of hellrats (about 7), the kitten will become a Hellkitten.

Hellkittens will grow into Hellcats and Hellcats will grow into Overgrown Hellcats. Hellcats can be wily or lazy.

A Hellkitten can be changed back into a regular kitten by giving it milk or by talking to Dave's mom.

Purple-kitten
To obtain a purple kitten, you need to have completed Swept Away. Then, talk to Wendy to start the subquest to obtain Magic unguent. After that, you can take a kitten to Wendy to make it purple. You must have the kitten in your inventory and use the cat with her. If a Hell-kitten if put up for the colour change, it will revert to a normal cat.