Buddy

"It's gonna be hard when you get there. If you're gonna work within S.H.I.E.L.D. for HYDRA, you can't ever get attached to anyone or anything. You have to fight that weakness in you." "Yes, sir." "Good. Now take care of Buddy and we'll get out of here. That's not a weakness, is it?" "No, sir."

- John Garrett and Grant Ward

Buddy was a dog given to Grant Ward by John Garrett.

Biography
Buddy was the only companion of a young Grant Ward when he was taken from a prison in Massachusetts to the wilderness of Wyoming by John Garrett to learn self-reliance. Six months later, Ward and Buddy had become close.

Garrett, in order to teach Ward emotional detachment to become a HYDRA sleeper within S.H.I.E.L.D., ordered him to kill the dog before they could go to S.H.I.E.L.D. Academy. However, Ward was unable to kill Buddy, and instead he fired his gun to the air and allowed Buddy to run away into the woods. Then however, he used a rifle to kill Buddy while he was running away, the distance making it easier for him.