Here's why it's unlikely we'll find a definitive answer:
* No central horse registry: There isn't a worldwide database that lists every horse and their name.
* Common names: "Granny" is a fairly common name for older horses, especially if they've been around for a long time.
If you're looking for a specific horse named Granny, you'll likely need more information, like:
* Location: Where did you hear about this horse?
* Breed: What kind of horse is it (e.g., Quarter Horse, Arabian)?
* Any other details: Does it have any distinguishing features?
Let me know if you have more clues! 😊