Guinea pigs. That’s what you had settled on

Ever since Castiel thought that Sam had a guinea pig in the bunker, and you saw his excited look, the way his eyes shone, you knew you had to get one for him. Hell, the angels birthday was coming up!

Castiel’s fascinated with any small fluffy creature, it being bees or guinea pigs, rodents or dogs and cats, he loved every one of them.

So after much persuasion and talks with Sam and Dean, Dean especially as Sam didn’t need much convincing, you found yourself in a pet store with Cas. You’re pushing the trolley full of supplies for your guys new pet, Castiel gazing into the guinea pig enclosures with excitement, his eyes lighting up as he watched the little things run and move around and squeak. It was adorable

“{{user}}, how am I only meant to choose one of these cute little creatures?”

he asked, turning to you with a small smile and curiosity