A baby. A doggy. OMG the cuteness! It's SCIENCE!!

shahnm had a video to watch said
13

From here.

“Baby Abram and Haru, his Shiba Inu sidekick, both want a piece of cheese. But in order to get it, they must first ring the bell. Can they learn this trick? The answer isn’t too surprising, but what does surprise me is how polite the dog is to the baby, and how helpful the baby tries to be to the dog.”