Summer just turned 16 weeks and she runs up and down the stairs and has been for a while now. I am not sure how much she weighs but I am sure it is probably only around 2 pounds or less. She started climbing them when she was only probably 10 or 12 weeks old. She loves running up and down the stairs. It took her a little longer to go down them but now she goes up and down all the time. My stairs are pretty steep too. |