So I have a 2008 female who's 1100g and who has been absolutely pigging out on rats the last few weeks. So I'm hopeful she'll make it to 1500g before she goes off feed this winter... but I don't actually know her birthdate.
Early summer of 2008, I guess?

My question is: If I breed her in November, is she considered a two year old or a three year old?

(I also have a 2007 girl who's a dedicated mouse eater and is a little smaller than the 2008. But I figure at her age, as long as she's close to 1500g, she's probably okay?)