ester
Not slacking multitasking
There is a big physical difference between being, say, 2 years and 1 month (as in just 2), and being 2 years and 10 months, (i.e. rising 3). The calendar date is arbitrary; the physicality of the horse is what is to be evaluated. I have, once, broken a 2-off year old for a client, and would not do it again as the horse was much too babyish IMO. The local western trainers, as well as any TB trainers, would laugh as they routinely start horses before their 2nd birthdays.
That's why I wondered if we should stick to months for ageing because yes there is a bit difference in a 24 month and 30 month animal that is not currently reflected in the way we talk about ages