My two labradoodles are 3.5 and 4.5 years old.
The 3.5 year old is my mellow male, Rosco.
My 4.5 year old is my constantly vigilant female, Thule (say Too-lee!).
My 14 year old border collie is a female, Cass.
While none of them are 'hyper' around the house at this point, both of my girlies are little busy bodies. Curious, have to explore, pace the house (not in a frantic or anxious way...just checking things out). It can drive me crazy some days when I want them all to just chill. I've all but told them in a motherly voice: "Why can't you just relax like Rosco here?"
Thule, especially likes to check the yard, make sure every leaf is in place, she'll ring to go out multiple times JUST to hang out and sniff, measure the distance from one fence to the other, count the leaves that have fallen, test the smells against her index of animal urine scents, and make sure she knows EVERYTHING. Rosco on the other hand is typically content to go out, pee/poop, and come back in.
When I get up in the morning the doods follow me out the bedroom. Rosco flops down to rest nearby, Thule lines herself up to go outside. Then if I call her back in later...she'll want to go out with Rosco, with Cass, and again a few times alone to finish whatever she started. Meanwhile Rosco is still flopped over, relaxing, now at my feet.
So was curious...do your girls act more restless/curious/busy than your boys?
UPDATE: Nearly 15 minutes later Rosco is STILL at my feet while I've been on the laptop...and Thule has wandered, clip clopped, around the house many times and now just rang to go out again... GIRLS! (The ridiculous thing about me being annoyed with restlessness is that I was just as curious as a young girl).