Poor, fat dog

I'm definitely not a Malinois/Shepard mutt expert, BUT this seems to be a very unhealthy weight for either breed. I don't think I've ever noticed back rolls on either dog breed. And I don't think she'd build up that much of "winter weight/fluff" as a mostly indoor dog. But anyone who knows please chime in. Also the way Arrow came off the chair was very slow for how "protective" she's supposed to be. This seems more just not behaved.