Save my moose leg!

Hey everyone last night my 4 month old puppy moose was chasing my other dog Ellie Mae outside to go use the bathroom. She jumped off my extremely high deck and moose followed landing in a hole and breaking his femur. He instantly started to cry so I knew something was wrong. He wouldn’t use one of his back legs at all so I took him to the emergency vet. The vet told me he broke his femur and he would have to have surgery to have it fixed. I let them know I could not afford the $3500 surgery and they said my only other options then are to either drop moose off at the shelter or amputate his leg. I don’t want to do either of those things I want my best friend back healthy. Please help me save my sweet moose moose leg. Thank you so much