This picture is the result of a drabble written by Edmondia ([link]) in a LiveJournal entry. It's half my fault - I prompted her. It featured Petshop of Horrors crossed with Death Note.

The following is the drabble that inspired this insanity.
.....................

The girl is tiny and beautiful and shallow and famous, and she's peering at the empty space above his head with eyes that aren't her own.

Count D wrinkles his nose slightly in distaste before smoothing out his expression into its usual placid mask. "Welcome, Miss...?"

She startles with a little squeak. "Oh, I'm being rude! Misa Amane, but please, just call me Misa-Misa!"

"Very well, Miss Misa-Misa." He takes a step back, bows his head, and gestures extravagantly. "How may this humble petshop serve you?"

The girl frowns sweetly, biting her lip.

"No need to be shy," he coaxes. "I sell love and dreams, Miss Misa, and I never ever tell my clients' secrets."

The girl grips the black lace of her dress with trembling hands and looks down, long bangs hiding her expression. "Misa-Misa," she says softly, grip tightening, "Misa-Misa wants something that will love her back."

Count D smiles. It is not a beautiful smile.

..............................

Since Count D has a habit of giving people pets in the shape of someone they love, I interpreted the next part of this as Misa receiving a cat that looks like Light. A cat because it would love Misa, but only on it's own terms and only as long as it suited its needs - traites I consider to be very Light-like.