Help Sammy's Road to Recovery

Hi, my name is Peyton. My sister Madison adopted a dog earlier this year from an abusive home. He’s a sweet Shetland sheep dog that has quite the personality named Sammy. Earlier this evening he got hit by a car and has been in the emergency vet. He is in need of getting an amputation due to the injuries to his back leg. We are in need of help funding his surgery/surgeries and his medical bills. Anything helps! Thank you.