As I write this article, I am days into the arrival of my new pony Gwynna, the third member of my little herd, with a herd integration in our near future. It seems somehow fortuitous to be riding the various waves of emotion that this transition can present — trepidation, fear, anticipation, and uncertainty — as I unpack what it takes to successfully introduce a new herd member or move from a barn with horses on their own to one where the herd lives together.