: With all DLCs, you can use the Cottage Living expansion to expand this into a "Nature's Guardian" story, where your Sim protects everything from tiny hamsters to giant cows, creating a sanctuary that bridges the gap between domestic pets and farm life.

: Your Sim finds a stray dog on their doorstep. Using the Cats & Dogs mechanics, they adopt the stray but realize it has a mystery illness. This drives them to open a small home-based clinic or work their way up to owning the local vet clinic.

: The rodents in My First Pet Stuff aren't just background fluff; they have hidden lives. If you watch their habitats, they sometimes launch tiny rockets or have "dance parties," suggesting an underground intelligence your Sim might be the first to discover.

: As your Sim becomes a successful vet for large animals, they encounter a "forgotten" small creature—a hamster or hedgehog from the My First Pet Stuff pack. The deep story here revolves around the Rabid Rodent Fever —a rare and potentially fatal disease introduced in this pack.