LOL I know just what your talking about, My little guy just turned 7mths on the 5th and he went from being so innocent to being oh so brave, he dont bark much yet, but im sure he will giving time with his new brothers & Sisters
he has so much energy, never a dull moment, one toy to the next all day, He is finally sleeing after playing for the past 8 hrs
LOL, It does get better though, My older ones try and ignore him, I think he gets on there nerves