MY RABBIT ROMEO THUMPS ONCE IN AWHILE, I FIND IT QUITE HILARIOUS..LOL:) HE DOES IT AND IT DOESN'T MATTER IF I HAVE JUST HELD HIM OR IF HES BEEN IN HIS CAGE, BUT I HAVE TWO ALPHA MALES WHOM ARE IN SEPARATE CAGES, BUT WHEN ROMEO DOES THE THUMPING THING ITS QUITE A PERSONALITY TRAIT, ITS QUITE TOO...