ken wrote:
I have had cats for 60+ years, but this is the first tortoise shell
kitten.

She seems to be not only hyperactive, but almost beserk in her racing
around and climbing anything in sight, etc....Her twin is docile by
comparison and sleeps many more hours per day.
Are tortoise shell "wired" differently?

yeah, got two, one's a tiny lunatic pretending to be a cat (which I
understand is standard tortie temperament), the other totally Maine
Coone in size, looks and attitude.

pat