How My Jingleballs Saved Christmas by Rena Marks

When your brand-new “kind-of” puppy comes along with his own alien handler.

Tabitha: My best friend gives me her adorable alien puppy. She won’t say why, but I suspect her crabby cat, lovingly nicknamed Satanic Sheila by me, wants to eat him.
He’s got the face only a mother could love. Poor little scrawny thing just shivers and shakes and buries his little face deep into my cleavage to hide.
I have to ignore the strange barking noises that sound more like a man motorboating.

Beloc: Her pet isn’t an alien dog—he’s my brother.
Punished for a short time to navigate Earth, a species he publicly deemed no better than pets—what better punishment than to become a pet himself trapped in a shapeshifting change?
Except J’ngal finds the most attractive, luscious female on the planet. He has access to her home, her body, her conversations. As a beloved pet, he gets to see her dress, watch her shower, tag along on all her dates. All the things I want to do and can’t.

Two can play at that game.