I cracked my IPad 3 that I got in April 2012, and I cracked it bad. What can I do? Please help'

I cracked my IPad 3 64 GB in the top left corner with a line across the top half of the screen back in April 2012, a few days after I got it. But yesterday, my dog stepped on it and completely shattered the top white part of the IPad. The glass has actually chipped off, and now there is a big hole next to the camera. The IPad still works perfectly fine, in fact I'm on it right now, but the only thing is that the camera is a little fuzzy. I'm not sure what to do. I bought the IPad through apple.com in April 2012 and its been engraved with my name on it. I cracked it for the first time a few days after I got it, don't judge, and now it's a really really really bad crack. I googled what to do if you have a hole in your IPad, and didn't find anything, so hopefully someone can help me! I really don't want have to pay another $700 to replace the IPad, and my school uses them so my IPad is super important. I don't remember if I have any insurance on the IPad, but is there like an automatic warranty if you bought it within the last year, and it's your first offense? Thanks so much!!!!!!