Saphira

Saphira continued to grow as well, but more slowly than before. Her extended flights, along with periodic hunts, kept her fit and healthy. She was taller than the horses now, and much longer. Because of her size and the way her scales sparkled, she was altogether too visible. Brom and Eragon worried about it, but they could not convince her to allow dirt to obscure her scintillating hide.

Magic is the simplest thing, Eragon