I used to make all my amigurumis out of cotton, but I found that it was awfully rough on the paws, so I switched to acrylic. But Cascade Luna and Luna Paints has changed my mind about cotton. This stuff is so soft! And unlike some cotton yarns, the fibers don't wear off on your hands, and it still has great stitch definition!
It's now available for sale at Crochet Kitten's Bazaar. Enjoy!