I don't this this is a monkey tail cactus. I think it might be a mammillaria, specifically mammillaria pilcayensis. They often grow up and then begin to grow prostrate as they lengthen.
I don't this this is a monkey tail cactus. I think it might be a mammillaria, specifically mammillaria pilcayensis. They often grow up and then begin to grow prostrate as they lengthen.