A dog’s paw, a sergeant’s boot. “He had huge feet, a huge heart,” Army Sgt. Amanda Ingraham told me of her former military working dog, Rex.

I’m posting this photo because Anna Zeman, Dogster’s social media guru, is looking for anything big-dog-oriented for Big Dogs Week on Dogster. And this paw belonged to one big dog Ingraham’s noble, gentle giant of a German Shepherd.

(Photo courtesy of Army Sgt. Amanda Ingraham. You can learn Rex’s story in my upcoming book, Soldier Dogs.)