I HAD THAT PROBLEM,WITH POUNCETTE,AS SHE WAS EXPECTING,AND LITERALLY,TORE INTO THE OTHER CATS.
I HAD,TO REHOME HER,AS SHE WOULD HAVE BEEN SUPER PROTECTIVE,OF HER KITTENS.
I AM SORRY,TO HEAR,THAT BUTTER,IS THAT AGRESSIVE,SOMETIMES THEY FIGHT,TO SEE WHO,GETS THE MOST LOVE,AND PETS,FROM THIER GUARDIANS.
MAYBE FELIWAY,CAN HELP.

I PRAY,THAT BUTTER,BECOMES HIS OLD SELF,SOON.