I transitioned my first two cavaliers to raw when they were 12 and 8 and my only regret is not discovering the benefits earlier in their lives. They became leaner and healthier, with fewer ailments and more energy. I’m convinced it added to their longevity. They both reached nearly 15 which is above average for the breed.
So when I got my next puppies (two cavaliers littermates) they obviously started on a raw diet straight away.
They’re 6 now and I’m often asked if they’re puppies and complimented on what great shape they’re in. Unfortunately, the breed is prone to weight problems and also heart issues, so the former contributes to the latter. I then rescued a third pup, who was underweight, scrawny and nervous. Again I started him on raw and added in raw sardines, eggs and goat milk. He thrived and developed into a happy, healthy little brother for the girls.