The Swan pet in Grow a Garden (GAG) is a rare divine pet with a 1% chance to hatch from the Fall Egg. Its main abilities are:

• Every 24 minutes, the Swan goes to another player's pet, befriends it, and mimics that pet's ability, effectively copying powerful effects or boosts from other players' pets. This makes the Swan very flexible and useful in public lobbies where it can scale its effect by copying strong pets around.
• Every 5 minutes, the Swan applies the Graceful mutation to a random fruit in your garden, which steadily boosts the value of your crops and can stack with other mutations.
• Additionally, every ~12 minutes, the Swan sings a song that grants all pets within a 20-stud radius extra experience points and restores some hunger over 15 seconds.

Overall, the Swan is valued for its adaptability and consistent mutation boosting, making it a strong support pet for garden productivity without needing complicated setups.