In Stardew Valley, rabbits are the only animal on your farm that cannot produce offspring.  This mod fixes that!

With this mod rabbits can have litters of baby rabbits.

Rabbits have a base fertility averaging 1 birth per 1.5 seasons.
By default, fertility is affected by the rabbit's happiness, age, friendship, and the current season.

If you have good breeders and you sell the offspring, rabbits can become almost as profitable as pigs are currently.  I have spent a lot of time making the default configuration balanced with the rest of the game, but nearly all variables can be modified by changing the values in config.json (see below).

Installation

• Make sure SMAPI is installed.
• Copy contents of zip file into Stardew Valley/Mods directory
  

Configuration
config.json has the following options:

• ignoreGender: if set to true, the rabbit's gender is basically ignored.  All rabbits can give birth as long as there is more than 1 rabbit on the farm.  Otherwise you must have at least 1 buck and 1 doe.
• accountForHappiness: if set to true, rabbits get a fertility bonus based on their happiness.
• accountForFriendship: if set to true, rabbits get a fertility bonus based on their friendship with the farmer.
• accountForSeason: if set to true, rabbits get a fertility bonus/penalty based on the current season.
• accountForAge: if set to true, rabbits get a fertility bonus/penalty based on their age.
• multiples: if set to true, rabbits can have multiple offspring at once.  Litter size is determined by fertility.
• baseRate: value determines the base fertility before bonuses. Default value 42 means it should take an average of 42 days between births before fertility bonuses are taken into account.
  

TODO:

• Ability to name offspring.  Currently they are named "Rabbit" by default but you can rename them manually if you want.
• See gender of rabbit when inspecting.
  

Version History

0.8 -- Initial Release

0.8.2
 -- Fixed bug that sometimes prevented game from saving.
 -- Fixed bug that allowed maximum occupants to be exceeded if multiple births occurred on the same night.