Cats Never Fly by Lori Ames

Protect his nine lives. Check. Find a pretty treasure. Check. Summon a dragon. Ch– Wait, what?
Cat shifter Simon refuses to jeopardize any of his nine lives, thank you very much. That saying “curiosity killed the cat” won’t ever apply to him. No way, no how.
Except…

When he’s out hunting for field mice one night, he finds the most wonderful whistle. It’s magical and intriguing and so very, very pretty. He knows he should return it, but what’s the worst that could happen if he blew on it first? Just once.
Months later, he finally has the courage to do just that, and when he does, the craziest thing happens. He summons a dragon, of all things.