Hi just wondering if my yorkie will ever be able to go up the stairs?

, shes sooo tiny 1 stair is double the size of her, right now i don't have to worry about her going up the stairs and they act as a baby gate lol. she should only grow to be about 4 pds, will i always have to carry her up the stairs? or can your 4pd yorkie go up and down steps?... my sheltie dog knew how to do steps from the time he was a baby but yorkies are so much smaller!lol!