Parker who is about 15 months old is my precious baby. It is no secret that I have spoiled him rotten ever since I got him at 13 weeks old and this is probably why he thinks that he is a Prince

However, he is taking it a little too far lately and I am unsure of what to do. Every time we go outside he freaks out barking like crazy and spinning around..and I totally get he is excited, but when it's time to go back inside he has been biting at my pant leg here and there, and lately he has been biting SO hard that he has gotten my leg...all because he doesnt want to go back inside. I really don't know what to do with him to curb this behavior. It's frustrating, and obviously it hurts! Any helpful tips would be greatly appreciated!
Also, we have taught him to stay inside when someone walks out the door but he does it with a bad attitude he pretends to lung at the door while angrily barking..yet he wont run out??? Don't know what to do with that one either.