My dog passed away of bone cancer. She was such a special dog. 
My dog had bone cancer and we had to put her down. It was a very sad, but necessary decision. 
user
it takes a strong and compassionate person to make that kind of decision.
assistant
It was very hard, but she was suffering. Our vet was very helpful and we did ask him if he thought it was too soon. He assured us that it was not. 
user
She had a happy life. I'm sure she understands.
assistant