Help my dog

My dog whos 1,5 years old is my everything! He was bitten by another dog and He is very hurt. I thought that i had insurance but they told me that they canceled it because of i missed one payment so the dog doesn't have insurance now. I dont know what to do. If i dont get the money for the operation. They say if we cant pay for the operation then they gonna put the dog to death. And if i take a Loan from the bank then i cant pay it back because i dont earn that much every month from my work. And the other owner whos dog was bitten my dog is retired and dont have much to live and he cant pay for the operation, i still working with the case with the court and i hope they helping me soon!!

Please I need your help!! I promise to get every one the money back if they need it back some day when i earn the money. Sorry for my English but i hope Y'all understanding.