Our 4 year old rescue XL bully Kassius

Hi my name is Paige, we rescued Kass just before the ban last year. Unfortunately he has had problem after problem, most recently is his arthritis in his back legs, he has only just turned four and it’s a bad case. We have spent around £10,000 to date out of our own pocket for him. He needs to see a orthopaedic specialist, this is £485 for initial consultation and then around £3,000 for scans and tests. We have only just paid out almost £3,000 for another operation he needed and still have £1,500 to pay off to our own vets without him seeing the specialist. This comes to around £4,500 and he also needs another operation the first week of December which is £2,500, this bring the total to £7,000 which we just cannot afford on top of what we’ve already paid out. I feel like I’ve exhausted every option, we’ve spent everything and more that we physically can but I couldn’t live with myself if we didn’t try everything we could to do the best we can for him. All invoices will be posted and I can also privately send our vet bills to date for him. Any donation is so so appreciated it’s literally life or death for him at this stage and it’s absolutely breaking our hearts.