German shepherd (German shepherd) loses weight, which will lead to a decrease in muscle mass, including the muscles in the front chest.

When a dog loses weight, both body fat and muscle will be reduced, resulting in some parts of the muscle appearing less prominent or reduced.

Chest is an important muscle part of German shepherd, and its development degree is related to the working ability and physical function of dog breeds. As working dogs, German shepherds usually have well-developed pectoral muscles, which helps them to have good strength and stability when running, jumping and performing other tasks.