My wimpy Rottweiler wouldn't go up the stairs when we first got him. We weighed 60 pounds! I am the one that takes care of the dogs, so I was stuck helping him up the stairs. I couldn't carry him, so I had to stoop over him and lift his front paws off the stair and place them on the next one up, and then push and pick up on his rear until he took a step.

My back hurt for weeks!
Now he bulldozes over people up and down the stairs.