Shoot the dog, honestly. The vet bills are going to be massive and chances are the dog will never fully recover.

take a mimimum wage job to make minimum payments on your debts

There are also going to be Gov't benifits aviable to you if you can not work.

If you are showing an effort is being made, people will generally work with you

http://www.dhs.wisconsin.gov/ddb/apply.htm

If your injury is really prevenrering from such things as moving your fingers I am fairly certain you would qualify for SSD. Go down to the office and raise hell

Good luck