You need to find Rabbit Man in the basement, give him a carrot and bring him up. Remember not to bring meat when you go down, or he will attack people.

Famine rabbits can be used as food, cooking or making various recipes. In addition, rabbits can also make some things. In times of famine, you can also catch rabbits with traps and put them next to rabbit holes, and you can get rabbits in a short time.