[alaskayorkie]

I wouldn't trust Eddie with a doggy door in winter. He likes the snow, too, and I'd be afraid of him staying out longer than he should.

Plus, he always comes back in with clumps of snow on his fur, and I could just see the mess he'd leave in the house when it melted.

I stop short of giving you a definite "no" only because I've never had a doggy door and don't know how smart Yorkies are when it comes to being out in the elements unattended.

Let us know what you decide and how it works.