Cat surgery

Tigger is about 12 years old and is actually a very healthy cat and i've had him around most of my life but unfortunately he has gotten a flesh eating disease on his back leg so it needs to be amputated in order for him to live its also a very costly operation we've already got $500 down with pet insurance but we still need at least $250 i hate asking for money from people but tumblr suggested it and i love this cat plus i don't wanna see him die when hes still full of life. The operation is actually tomorrow (they literally told us about this not long ago like thanks!) So I don't know if we'll be able to reach the goal but if you can't donate help spread it around! Help me save my cat please