The best teachers come in all shapes, sizes, and species. Children can learn just as much from a beloved fur companion as they can from any human, and now, with one recent video, we have solid proof.

Renegade, a chocolate Labrador mix, stars in a gentle lesson for her baby sister. Filmed by mom Delaine, the video clip shows Ren dropping balls into the baby toy and wagging her tail as the toddler ...