The peak of the whole dog's condition is 3

After the age of 6, all aspects of the body decline. After the age of 8, it is not suitable to do reproduction again. The age of 10 enters the old age.
"Extended data":
How to feed a golden retriever:
Before the golden retriever puppy is four and a half months old, don't let it go up and down the stairs by itself, and be careful when getting on and off the car. If it is too high from the ground, don't let it go up and down by itself, but hold it.