I will jump in on this one.

At first, it seemed like Foster would never lift his leg. He did his puppy squat forever, and I wished he would hurry up and learn because he had already started squirt/spraying log distances (all over the feathers on his front paws). It turned out, it was a more a location thing than a maturity thing. I was taking him to pee around flat surfaces. Around bushes, he lifted. It was nice having him lift, but it took forever for him to finish (as he saved a bit for every bush). After neutering him, the squating came back. He only lift (halfway) if I position him next to a bush. The nice thing is that he goes all at once without getting his paws dirty. His squating is not the only puppy behavior to return .

About the dog who did handstands....I watched a Westie for about a year, and I noticed he always did handstands. I read somewhere that it is to make it appear that he is a taller dog.

My mom's chiuauaua is female, but she grew up with a male lab. She lifts her leg and squats! What a site. No wonder she refuses to go in the snow.