Last Tuesday we had the most heartbreaking news that a lovely almost 7 year old bullmastiff has bone cancer in his front right ankle. We are completely crushed. We have brought him home for palliative care and to give him as much love as possible. Can anyone give me any advice of what to look out for in terms of when they're ready to go? He's sleeping lots now but that might be the tramadol he's been prescribed. It's so hard to decide when a good time is for us let him go and I don't want him to suffer in any way. Also with the bullmastiff breed it's very difficult to determine how they're feeling as they have a very high pain threshold. Any advice would be really helpful.