Taz is going to the vet on Tuesday so I'll get a current accurate weight then. But last time I weighed him he was about 11lbs. At his heaviest he weighed in at 21 1/2 lbs. That was over 6 years ago.
I weighed Paizly about a week ago and she was just over 6lbs. My home scale only weighs in half pounds and she registered at 6.5.