An Animal Nobody Loves

Here's a riddle for you. I am not a popular animal, although I do perform some very important jobs. I am related to a very popular animal, one that children really like and aren't afraid of. Most people think I give them what I have, but that's just a myth. I have very rough skin and can protect myself from my predators. By Halloween time, when people think of me, I am usually hibernating. Who am I? I am "Millie" the toad from Mrs. Keppler's PK classroom. I went on a nature walk last week with my PK friends and they found a nice spot in the woods for me to make my winter home. Some of my friends were still a little afraid to touch me, but I had one special friend who was very gentle when he picked me up. He took me to say good-bye to all my friends and then let me go. Some of my friends noticed how easily I blended in with my surroundings. See if you can spot me in the picture. Thanks again, PK, for letting me visit with you for a while, and helping you learn more about toads and frogs. See you in the spring!