I am studying for racehorse trainers test... I have to know how to read a horses age by teeth. I know the galvains groove and the shift, and but honestly the early years to about 7 , oh all of it confuses me, I have books, and workbooks and all that, but they don't really have pics, they have some lame poem that I do not understand and sooo basically I NEED HELP! Does someone know of a good book, website something??? I will appreciate it ! Thank you, oh and I asked the vet and well ... he wasnt much help either.Thanks!