i've never owned any dogs before TeeJay, but from experience with my boyfriend's dog, i would say each has their own personality. teejay is very very independent little boy, but he will cry if you leave him for a minute. he LOVES to play but knows when he's being too rough. he's soo smart too. he was potty trained in about 3 days and he knows how to sit, lay, speak, shake hands (or paw) and he's learning rollover right now.
my boyfriend's boy puppy is completely opposite of teejay. he's very clingy to his owner and is a lap dog (he'll jump onto your lap and wont budge). he hates strangers opposed to teejay who LOVES new faces. he's also a very picky eater whereas teejay will eat almost anything. he loves to be cuddled with and teejay will let you cuddle him for a few minutes and then break free.
all in all, i think puppies get a huge chunk of their personalities from their owners regardless of gender. my boyfriend's family keeps their puppy inside always which is why he hates strangers (not to mention other dogs--he hates teejay
) and they also love to hold him 24-7 which explains his clinginess. so there are 2 different types of personalities that i have experienced from boy puppies. so it varies with males. i'm not too sure of the female puppies though.