What is the usually size of a mature adult Russian?

[Jessica Yue]

Male 5.5+ inches and female 6+ inches?

 

[wemakegreatpets]

My female is nearly 9”. Unfortunately I have no idea what her age is as she was surrendered and I then adopted her. She’s unusually large, so I’ve been told by everyone. Though I’d say females are probably mature at 6”.