As you all probably know by now I have a female staff puppy (shadow) who is now 18 weeks old. Since she was 12 weeks i have been trying to socialise her as much as possible, with animals and other dogs. When she meets a person or dog for the first time she is usually very submissive, not in a scared way, she's always waggin her tail, but she'll crouch down, or lie down, or even roll on her back. Then once she has a pat (of a person) or a sniff (from a dog!) she'll be back to normal, more or less, you can see the other getting to know stuff going on, and i thinks she's fairly normal. She's never agressive. She met lee's parents dog Monty at 12 weeks, on neutral territory, it all went fine, she did her usual submissive thing, then they just started playin, after the getting to know u sniffing was over! Shes now been visiting him about once a week for the last six weeks, they get on like a house on fire, its sooooo great to watch them play, she gets so excited when she's down there, much more than if we take her out for a walk or if she gets a treat. The thing is she's starting to turn into quite a bully, she's wont leave monty alone, and I can see she is trying to asert her dominance over him, she's challenging him. Where as previously he would sniff her she would roll onto her back, now she wont let him, as soon as he goes near her bum, she off! And she is constantly bitting at his ears and trying to jump on his neck, she tries to kinda mount him, but he's still a bit big for her, I can see she is trying to dominate him, its not just puppy playfulness. Monty really doesnt like this behaviour. He puts on what we call his "nasty" face, u know, lips drawn back, teeth showing, he doesnt snarl, but thats what he looks like hes going to do, he also kinda wimpers and whines and barks really loudly at her, when she does it, you can really tell he doesnt like it. He's always trying to get away from her. My worry is that they are going to get into a fight. She keeps pushing this behaviour, he's really not liking it, sooner or later I figure one of them is going to snap, I really cant see monty "stepping down" shall we say, and letting her be the boss, especially in HIS house! This is where it alsways happens, in his house. And my worry is that if he goes for her, that she wont back down and because shes a staff, there'll be a massive fight, and I wont know what to do. What can I do about this? Help.