Rat

Rats are small animals which can be found almost anywhere. They are best found outside of and on the first floor of the Lumbridge Castle. Their tails are most commonly used for the completion of the Witch's Potion mini quest, and they are one of the weakest creatures in RuneScape. Rats do not drop bones, except the rats in the Stronghold of Security. Curiously enough, rats never drop bones anywhere else. They are good for training on as they have low defence, (so you can hit high and get more xp), and respawn within a second or two, but they can be hard to click as they're small and moving very fast. A rat has very low HP, as well as defence, which make these very easy to kill. Beware, if you're level 138, the Rats may have a chance to hit a 990, or "1-hit" you. This only happens in rare occasions.

Cats
Players who have a cat or a kitten can tell it to chase vermin, in which case it will try to attack any rat in range. If your cat catches at least 100 rats, you can go to Gertrude to get a special amulet (no special bonuses). Also, if you have a Rat pole, a rat will be added to it each time a rat is caught by your cat.

Drops

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Trivia

 * The examine text is based on the Discworld books by Terry Pratchett, who goes into detail describing the ways dwarves eat rats.
 * A Rat bone, which differs from the usual bones dropped by rats, are rare drops used in the Rag and Bone Man quest. This bone cannot be buried.
 * There is a rat in Surprise Exam!, however it is the "class pet" and you cannot attack it.
 * Rats do not appear on the minimap. This is because of the rats' abundance in the area, which if shown would make the minimap covered with yellow dots.
 * Rats are perhaps one of the weakest monsters in RuneScape, along with the level 1 Spider.
 * The rats in the Stronghold of Security are one of the weakest monsters to drop bones. Strangely enough, rats in other places do not drop bones, and the bones are larger than the rat itself.
 * Before the constitution was released they had 2 hitpoints and max hit of 1, rendering them even weaker.
 * The rat near the runecrafting altar at the duel arena may have the fastest respawn time of any monster in f2p, other than Dragith Nurn.