hoof cracks

Question
first of all we are new horse owners (my husband and I and our 10 year old daughter) I had ponies growing up never took lessons of any kind just got on and rode.  But now we have 3 horses my 9 year old mare has multiple cracks in all four hoofs nothing seem all the way through and she does not have a limp, I rode her for at least 30 minutes before purchasing her and she still showed no sign of pain.  Also her back hoofs have what looks like a toe the hoof shape that is.  Will shoes be something that is needed

Answer
Hello Laura, Scott and DeAnna,
can you send me pictures of you mare, please? It would be easiest to try to give you an answer after seeing what her hooves look like. Also, if you would , can you also send pics of your other 2 horses' hooves? The best pics would be of the horse from the front, side and back on level hard ground where nothing is obscuring the hooves, and then also take a pic of the bottom of one front and one hind hoof.

You can send these to jnksize@comcast.net.
Also, please let me know what all your horses currently eat, where they are kept (outdoors all day, in-and-out, etc.) Sometimes hoof quality has a lot to do with nutrition and I just want to cover all bases. What breed is she?

Thanks much and  looking forward to hearing from you!
Christine