Implement small pets e.g. rabbits, gineapigs, hamsters, chickens.

As seen in a Sims 4 bundle (cottage living). Add small pets that can be bought from a pet store in town. With hutches/coops to place in build mode, in player's garden, or small hamster cages to have in players homes. They can be fed and given water and held with could make player's mood increase.

This could also be updated in the future to add more range of small pets e.g. reptiles; for more interactive plot decoration. This could also come with seeing some rare wild animals around the map, deer and wild rabbits.