Tiggy’s surgery fundraiser

Tiggy is a dog originally from Bosnia, who was deliberately shot by his owner to use his situation purely to make money. It has left him paralysed on his back legs. Fast forward and once Tiggy’s plight was made public some amazing people stepped in to rescue him, and finally he was given a forever home with the wonderful Raggie Dogs Retreat in France. 
Tiggy is the kindest most gentle soul and is a very happy boy. However in the last few months Tiggy has started to chew one on his legs which has resulted in a permanent injury that will not heal. After  consulting with the vets the decision was taken to amputate to his knee and he is now recovering and doing well. He will soon be back on his wheels. Please can you help me cover the costs of his surgery, Raggie Dogs Retreat runs solely on donations.
Thank you in advance foe you help.