ye they scratch the fuck out of you and they're hyper as fuck, 1 minute they chill the minute they're like fuckin sonic dashing around the place, climbing, chewing cables, scratching furniture, scratching you. I've got slashes on my arms, chest, legs. The shit is the worst when its on the carpet as its a bitch to remove stains, I've had to use distilled washing up liquid with paper towels and wet wipes. Its a horrible job to deal with everyday, at least in the litter tray it can be scooped out into a bag with ease then disposed of but the carpet is a nightmare.
Puppy's are hyper and destructive as well but I don't remember them scratching the fuck out of me like this and they lack the agility where as cats are like fuckin spiderman climbing everything in sight and they always seem to land on their feet.