Hmmmm, interesting topic. I always list what my horses will do, for instance, Leads, loads, bathes, ties, clips, trailers. Stands for vet & farrier. If they don't do any of that I always put that too. Leads, loads, hasn't bathed yet still too cold, ties, clips, trailers, stands for vet but still testy with farrier but will eventually allow all 4 feet to be done if farrier is patient. I pretty much spell everything out. At 8 months I pretty much expect my horses to do everything an adult would do minus being saddle broke but I will have already started their ground work. By 18 months I expect them to carry a saddle and be in driving lines, even though I won't back them til their late 3 year old year.