We have a 9 year old golden retriever that has lost 10 pounds over the past year, and another 5 pounds within the last couple of weeks. He has lost a lot of muscle, around his head and chest/back. On top of this his hind-end sways and he has trouble walking down stairs, or in general. He doesn't appear to be in any pain but we are wondering if any other goldens have had symptoms like this, and what the outcome was. The vet has quoted over $1,300 for tests and we are unable to pay out so much when we feel the outcome won't be good news.