But while Fox's situation is desperate, the lonesome pup hasn't given up completely yet.
"He gently took a treat from our hand and gave us a little nuzzle," writes Leon. "He still has hope left behind those sad eyes!"
If you're interested in adopting Fox, visit Miami Dade Animal Services in person at 7401 NW 74th Street, Miami, Florida. Business hours are 10 a.m. to 6:30 p.m., Monday through Friday, and 10 a.m. to 4 p.m., Saturday and Sunday.
Or, if you live outside the area and think you're ready to take a dog like Fox home, visit Adopt-a-Pet.com.