There used to be a lot of Jiffy to love. In December 2008, the 11-year-old border collie weighed 116 pounds — about three times what he was supposed to. He had a hard time walking, stairs were nearly impossible without a lot of help, and leg lifts were only a yellowed memory of slimmer times.

One fateful winter night when temperatures dipped into the single digits in his Wisconsin town, he could not get back up the few stairs to his house. So he lay down on the sidewalk. His 59-year-old

owner said she could not get him off the sidewalk. He had frozen solid to the concrete. She tried calling 911 to no avail, put a blanket on him, and checked on him throughout the night, according to the Sheboygan Press.

Come morning, animal authorities showed up with warm water and finally disconnected Jiffy. They said that ironically, the reason he couldn’t get up was the same reason he managed to survive the frigid night: A tremendous amount of insulative fat.

After a hearing, Jiffy’s owner was forced to give up Jiffy.

Then Jiffy found himself in the hands of new owners Patty an Peter Geise. After about a year in their care, Jiffy has dropped a whopping 40 pounds. Even though he has more to go, he now has a spring in his step, can walk a mile at a good pace, and can tackle an entire flight of stairs with no sweat.

Oh — and he’s very adept at leg lifts these days.

“Hes moving like a regular dog again, Patty Geise told the Sheboygan Press.

He’s now 76 pounds, but should be about 40. But the Geises aren’t going to push too hard for him to reach his ideal weight. After all, he’s a bit old for anything much more dramatic than what they’ve already managed to achieve.

There’s still a lot of Jiffy to love, but at least not quite as much.

(Check out the video below for a better idea of “before.”)