Whether "Yirenjia dog food" is natural food mainly depends on the source of its raw materials, processing methods and whether any non-natural ingredients are added. Natural food generally refers to dog food made from natural and harmless raw materials. It does not use any by-products or dead animals, and does not contain artificial ingredients. Its preservatives usually use natural ingredients, such as vitamin C, vitamin E, etc.

However, at present, I cannot confirm whether "Yirenjia dog food" meets these conditions. It is recommended that you check the packaging of the dog food or contact its manufacturer for more detailed information.