Guess whose poochGuess whose poochHow cute is this lil' mutt?

Betcha can't guess who it belongs to.

While the Hollywood trend for rat-sized dogs rages on, Heroes hot stuff Ali Larter has upped the ante with a, well, medium-sized pooch.

We so want one.

It doesn't matter that it won't fit into our handbags.

At least it won't get caught in the Shed's mousetraps.

Go check out all our dog-loving showbiz pals in stars with their dogs.