The reasons for the blackening of the golden retriever’s belly:

1. The owner directly uses human bath products when bathing the golden retriever, causing the golden retriever’s belly hair to turn black.

2. The golden retriever is malnourished, or eats too salty and oily food, which causes the hair to fall off and cause pigmentation, and the belly becomes black.

3. The darkening of the Golden Retriever’s belly may also be caused by skin diseases caused by parasites and mites.

Solutions to golden retriever belly blackening:

1. If it is caused by skin disease, you can usually give lecithin to enhance the skin's resistance.

2. If it is caused by improper bathing, the golden retriever should be bathed with dog shower gel to promote the metabolism of hair and skin.

3. If it is caused by nutritional imbalance, you should choose a high-quality dog ​​food for your golden retriever to promote the growth of its hair and skin.