Rex needs help

My name is Rex and I am 5 years old! My tails always wagging even though I haven’t had an easy life. I spent my 1st year in the ghetto of Indianapolis and it shows. When my dad rescued me I was in such rough shape. I was severely malnourished and they thought i had a broken leg. It luckily turned out to be carpal laxity syndrome. I was a big growing boy on a terribly unhealthy diet.I’m so glad my dad saved me and he told me he’s so glad too! By the age of 2 i was attacked by a mean dog, he bit me in the face and I had a mysterious infection that showed up as a softball sized lump overnight on my face. When I turned 3 I had a luxating Patela in my right rear leg that required surgery and several months of physical therapy. My dad was the best thought and we spent lots of time on a treadmill in the pool, my leg worked better than ever! Since then I’ve had it great. We go to the beach, on walk and we have fun in the woods all the time. My dad has lots of other rescues and we all go out together. For several month I’ve been limping again. This time on my other back leg and now it’s gotten so much worse. The doctor said I have a luxating patela, a torn acl and possibly bone cancer after he looked at my X-rays. All I know is it hurts so bad I can’t use my leg anymore.