I Just Forgot (Little Critter)By: Mercer Mayer Illustrator: Mercer Mayer Series: Pictureback Mercer Mayers Little Critter is having a very forgetful day in this classic, funny, and heartwarming book. Whether hes forgetting his lunchbox, forgetting to put on his rain boots, or forgetting to turn off the water, both parents and children alike will relate to this beloved story. A perfect way to teach children about responsibility!