Here is a link to the University of Minnesota. This place has everything to help a sick or injured pet 24 hours a day 365 days a year. A great place to tour before you need them and a great resource to know about. Please explore their website. Also consider donating to them so that they can help others or even consider a volunteer position or just take a class. You would be amazed at what you can learn just by visiting the specialty areas.
This is where my Cavaliers go to have their hearts and eyes checked as well as anything that comes up that is an emergency. Post their number on the fridge because you never know when you might need it.
http://www.cvm.umn.edu/vmc/