1 have a male russian (campbell/hybrid) and female russian (ww/hybrid). My male(huxley) is much calmer than my female (essy), even though he is new to here, his previous owner said he was also very calm, whereas my female reminds me of a puppy some times
. They are both more hyper at like 2am where it is seriously like they both have ADHD and they will only stay at something for a few seconds before running around and onto other thing.