SpicyPup started occasionally cocking from 9 weeks! Some frantic googling ensued to check something wasn't horribly wrong. He has consistently cocked from 13 or 14 weeks and never squatted, just did it standing up. He is 5 and a half months now and marks on walks. Furry plums off in a month or so I think!
Mine is a year old next month and has never cocked or squatted he just stretches himself out and goes. He did have a brief stage of going for a wee and then after he finished cocked his leg think he was a bit confused
He was not really a humper either, apart from a couple of collies then he was a tad obsessed.
My little female I have had for 3.5 weeks is in season. I will be getting her spayed in 3 months time. She sniffs at all the cocked adverts for ages and when she likes it she squats at the bottom of it - and she seems to like lots of them. She's a right little hussy. But didn't at all. Wonder what her criteria is? Where no other dogs have been, she squats with her right leg cocked sideways bent. Perhaps she can tell which ones have been neutered? Not enough testosterone in wee?