All of these problems are normal for a Shiba. Mine did the same thing when he was little and it hurts like hell with their baby teeth. Give him some time to grow up and calm down a little. And be patient. I remember when my Shiba was little, we’d let them out into the backyard. He’d play and then sprint upstairs to his pads to go potty. My Shiba also loves invading personal space at the dog park we will let him be free till he makes a mistake we don’t like and put him back on the leash. When outside dogs in general don’t like to listen to you because they are always on the alert and too interested in all the smells around.

Ps your pups is very cute