my style changes often so i just tried to sketch out a messy picture of basic beginner's anatomy.
i draw lots of animals but i am no where near great at canines, so forgive some mess ups.
though, generally, this should help you a bit and eventually you'll knock me out of the park someday!
hopefully you can read the writing [sorry, i write very, very poorly]
just ask if you need a 'translation'
hope it helps!