We have three chihuahuas in our family, two of which are unable to walk down stairs so I often find myself having to carry them outside. They don't like to do anything outside, if the whole group isn't there and I don't like leaving them outside without supervision, even momentarily. So, I find myself having to carry both of them outside on one go, one on each hand.
What would be the optimal way to carry them so that they would feel as comfortable as possible on the way? Should I really be taking them outside one-by-one instead, and leaving the other two unattended for a moment, while I carry the third one?