You know my thoughts about cancer in Flatcoats Jo, we've spoken about it in the past but I really don’t believe there is any "ONE" reason. I do certainly get worried about preservatives and additives in dog food and wonder if there is any possibility of a link with a whole range of dog problems.
As far as the Chicken wings are concerned, the old Keepers used to chuck a dead rabbit of bird, feathers and fur and all into their kennel with no ill effects! But I must admit I would not do it!
Like humans, a dog needs a balanced diet but also like a human it does not need to be balanced in the short term! Not every meal a human eats provides every thing that human needs but taken over a period of time healthy eating will balance out. That is the natural way!
For the last point which I'm trying to make is again related to humans! I've long held the opinion that we are so protected by all the sterilisation, protection, double wrapped and treble wrapped processed food that we are loosing or have lost the natural resistant to the germs and viruses which are all around us. Who remembers the bacon standing on the bacon slicer in the shop or the big rounds of cheese standing on the cheese board? Yes, I know it could pick up all sorts of nastiest but we never got ill from it because we were subject to it from the day we were born. We built up an immunity to it! These days, if a nasty gets in someone dies! The immunity is just not there! And the same thing applies to our dogs! How much of the immune deficiency problems stem from the fact this? Not all I know but certainly some I would have thought! As a kid I was always told, "A peck of dirt won’t kill you!"
Regards, John