Thanks for the comments all .

You'd never guess from their play sessions that Tasha is top dog. Tommy is obviously bigger/stronger than she is and she lets him maul her around quite a bit. When he was a lot younger, he used to sometimes grab her collar and yank her around and she'd start coughing and hacking, of course we stepped in and made him stop that, but she never complained. But if she feels he's getting too much of Mom or Dad's attention, watch out! She has exclusive Buster cube privileges and first rights to "vacuum" the kitchen floor after dinner too

He's always grabbing for a ball or bone during playtime too, even though Tasha could care less about it hehe. He will shove it tauntingly in her face or bonk her on the head with toys LOL