* Not widely known: The game might be relatively obscure or have a small player base.
* Inaccurate or made up: The term "Angry Granny Toss" might be a joke or a misremembered name.
To find out more about this "mystery pet," you would need to provide more details, such as:
* The exact name of the game: This will help narrow down the search.
* Where you encountered this information: Was it in a video, website, or conversation?
* Any other details about the pet: What kind of animal is it, what are its features, what is its role in the game?
With more information, I might be able to assist you in finding the answer.