She’s a tortie! No wonder she’s wild and crazy!
Torties and calicos are cool. The black (or dark gray) patches of fur are due to one X chromosome. The orange patches are due to the other X chromosome. So they really are patchwork cats! Incidentally, this is why you’ll almost never find a male calico: he’d have to be XXY, and that doesn’t happen very often (it’s kind of bad for the kitty when it does).
Just a dribble of genetics nerding. π
These gals also seem to have a double dose of PMS, or at the least a lively temper. Don’t know why, but a laid-back calico or tortie is pretty rare. My first kitty was tortie and white. She was sweet, loving, and a wonderful companion . . . but don’t cross her! π