After winning your heart and thereby ensuring their survival, they blast into the kitten version of "the terrible twos". I suspect phase lasts well over a year.
How can something that weighs under two pounds, "thunder" around the house, knocking rocks off ledges and terrorizing dogs that are big enough to "snuff" their lights out ?
I've been fortunate enough to locate a great kitten-sitter. And would you believe it: he lives right here in my house !
Ta dah !
Though he is seven, and a pretty mature sorta guy, Roswell often thunders around the house with the kittens. If two kittens careen through the living room, wait a second and Roswell might come flying around the corner after them.
When Charlotte and Clara get out of line, I can count on Roswell to give them a smack and a growl, and then all is forgiven.
Just don't ask Butters to babysit them...