People typically say 2 or 3 years for a female ball. Is that 2 or 3 years of age, or 2 or three winters? For example, a female born in the summer of 06 will be 2.5 years of age this winter but will be experiencing her 3rd winter. Which should we go by? I know the rules are not set in stone and it depends on the animal and so on and so on, but I'm just wondering.