S day in the A to Z Challenge! I think S is my favorite letter for this topic (other than the letter L of, course). I can think of so many fun (and naughty ;) S words/reasons for taking a non human lover! But I'll just stick with one today.
Non humans tend to be very in tune with their senses- sight, sound, touch, taste, and all of the "other" senses your varied creatures possess. This can lead to some very tender moments.