why you are asking for my ss number?

If you're referring to your application to be a sitter, it's not shared online. It goes from Rover to Checkr (a third-party provider), who checks background of all pet sitters and dog walkers who list their services on Rover and confirms information such as your citizenship and social security number as well as your driving record and criminal history. It shows potential clients your commitment to earning their trust with their pet and is required if you want to take care of pets through Rover. https://support.rover.com/hc/en-us/ar...