* Buckbeak's size is fictional: Buckbeak is a magical creature from Harry Potter. Real-world animals don't reach those kinds of sizes.
* Genetics are complex: While you can predict some general trends in offspring size based on the parents, horse breeding is complicated. There are many genes involved, and the outcome is never guaranteed.
* Caspian ponies are small: Caspian ponies are known for their miniature size. Even if you breed them to a larger horse like an Akhal-Teke, the offspring will likely be smaller than a standard horse.
Let's break down the possible scenarios:
* First generation: An Akhal-Teke x Caspian pony cross might produce a foal that's smaller than a full-grown Akhal-Teke but larger than a Caspian.
* Second generation: If you then breed that foal to another pony, the offspring could be even smaller. However, it's also possible that the Akhal-Teke genes will become more dominant, resulting in a larger foal.
The bottom line: You could get a horse that's bigger than a Caspian, but it's unlikely to be the size of Buckbeak. Remember, even with selective breeding, there's always a degree of unpredictability when it comes to genetics.