We recently purchased a three month old mini dox. (we have had her about a week) We live on the 3rd floor of an apartment building. We normally take the stairs that are average in height (not high and not low). Roxy (our pup) has no fear and climbs them with ease, but my boyfriend and I are concerned for the safety of her back and/or if this is not good for it. (especially going down the stairs) Does anyone have any advice? Suggestions? Our vet told us not to allow her on beds, but didn't mention stairs. Are we just over worried parents?

Thank you