It’s an okay little story, with a nice lesson about coming together to help someone in need, but there seem to be a few holes in the thread tying the story together.  A giant, magical ball of yard shows up one night in the hedgehog’s quills, the spider teaches him how to knit, he knits an assortment of gifts for various forest animals, and every time the gift mysteriously turns into something else that animal likes best.  Finally a crab comes inland to find the hedgehog and ask him to knit something to help a beached whale, but he’s all out of yarn, so all the critters return their gifts, which the hedgehog is able to unravel and reknit into a single string which turns into a giant butterfly that is big enough to lift the whale and return him to the ocean.  We are never told where the yarn came from, why the transformed gifts are better than the hand-knit ones, how the hedgehog is able to unravel things that are no longer made of yarn, or why a giant butterfly was the best way to get a whale back into the ocean.