Females generally to my knowledge are smaller than the males. That does seem a bit small to me though. My Emma is 9 month and a week and weighed in at 39.9 on our Wii yesterday and 35 at the vet's office on Friday (they're scales are always off). Does she look skinny to you? It's hard to tell in the pics. Back in May we went to a big event here and I saw lots of female bullies and to my surpirise they were small (probably about 25-30). She sure is pretty!