For research, I looked at existing pet simulators. There weren’t any I could find that had a direct link to the theme of therapy or mental health, which set my idea apart. They all have a ‘cute’ aesthetic and use bright colour palettes.
https://www.androidauthority.com/best-dog-games-android-923789/
https://ilols.com/virtual-pet-apps-games-iphone/
Little Friends: Dogs & Cats for Nintendo Switch - Nintendo Game Details
nintendogs + cats: Golden Retriever & New Friends for Nintendo 3DS - Nintendo Game Details