Haha... if you little guy is big than Wrigley must be a beast
I just weighed him this morning at 6.2lbs at just over 5 months old
I love him though because he is sturdy and I don't have to freak out anymore if he decides to bolt and jump off of the couch. I certainly don't think 4lbs is big by any means, I wouldn't be worried, he is soooo adorable!