I have only had Tinkerbell for a month, but I have recorded her weight every single day. Sometimes, having a postage scale in my home office is not a good thing!
13 weeks: 18-19oz (according to her breeder)
14 weeks: 18.8oz
15 weeks: 20.4oz
16 weeks: 22.0oz
17 weeks: 23.8oz
4months: 25.6oz (9-18-08)
She will be 18 weeks tomorrow and weighed 25.0oz this morning.
I kept a chart for my Maltese, as well and she followed the weight chart almost exactly. She is now 2yrs and 3.15 pounds.
Wendi and Tink