By Deena Prichep Christina Chang is encircled by Gemma, a carpet python, during Snake Yoga at HISSS in Portland, Ore. on Feb. 28. Celeste Noche for NPR hide caption Yoga classes featuring animals are pretty old news. You're probably already familiar with people doing downward dog alongside actual dogs, or letting a goat scamper across their tabletop pose. In Alaska, they've even done yoga with reindeer. It seems we may have reached peak animal yoga. But here's one more entry: in Portland, Oregon, one yoga class goes beyond the usual furry, adorable yoga classmates, and teaches yoga with... snakes. Yup, snakes. Snake yoga is held at HISSS, a reptile-centered pet store that opened last year. Dru Morales, the owner, started the shop to provide all things reptile. " We offer beak trimming services for turtles and tortoises, nail clippings, spa packages," says Morales. "Shedding assistance, a turtle and tortoise shell wax service…" The list goes on. And a few months ago, he wondered: what about snake yoga?…