I think it's just from age, our younger cats have silky-soft paw pads,our older cat has rougher pads,though. They seem to be alright,however every now and then Tiger (Older cat)seems to lose a bit of the dead skin on her pads,it doesn't seem to bother her,though. If you're really worried about it,you could always take your cat to the vet,though I wouldn't worry too much about it,unless of course the cat seems to be in pain. Congrats on the new kitty,too.

I think you're right,it could just be from walking on hard,or hot surfaces. Just keep an eye on her.
