My female is older and the more serious one. She knows the difference between family, friends, and acquaintances. If its family she acknowledges them and watches over them carefully, friends are acknowledged and she is on her way, acquaintances are lucky to be acknowledged, she has no use for them. My male is younger and he enjoys meeting people, he just sits and waits for them to come pet him. He almost looks offended if they keep walking. Both have stared a few people down if they didn't know or trust them. Neither of them are shy or aggressive, they can be aloof, the female is definitely more aloof then the male. When it comes to kids, they both love them and love being around them.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD