Rats can be found almost everywhere. They have have 100 hp and are similar to bats as they are always level 1, drop two coins when killed, and can be avoided by putting on a pendant. They live on floors and walk until they meet a player. When their is a wall or there isn't ground in front of the rat, it will turn around. They sometimes stop for a while and keep walking a few moments later.
Rats can attack players that are near them on the ground. If you put on a rat repellent, rats won't be able to see you, so they won't attack you. There are 2 types of Rats: Rats and Bolt Rats. Bolt Rats can only be found in Sawmill