Zander's knee surgery

Meet Zander. He's a 4 year old pit mix who has suffered from bad owners and sadly has the scars to prove it, BUT he's a sweetheart who is always the first to give kisses to anyone and everyone!
Zander recently started to limp and then completely stopped using one on his back legs and was walking only using three of his legs. We went to the vet and just found out that Zander has suffered from an ACL tear. Surgery is the best option for him to be able to regain the use of his leg and I need some help paying for it. I can't imagine this little guys life without being able to go on hikes, chase squirrels, and explore the world with his best friend and brother, Tyson.  Your support would mean the world to me.