When Tiny trys to bite we 'pop' him lightly too. We also hold his moth shut and say "No biting", "Bad Boy"! Then I put him in his little dog house and say "Stay! bad boy!". Then after a few minutes I go and get him and say softy "Tiny no biting ok, be a good boy." Also, he is teething so if he continues after time out then I get his bacon cheeseburger edible nylabone and hold it for him to chew. Usually he can also be easily distracted by throwing one of his toys to fetch or his rope to gnaw on. Sorry I do not have any suggestions about the barking and agression. Good luck with your fur baby
, I hope some of this may help.