If Zhang Zian's guess was correct, the reason why Leshi dog food could be so cheap was purely because deer breeders in California were eager to get rid of their reared deer. So, even if the dog food itself was cheap, there was still profit.
Perhaps it was not just California. Due to the gradual deterioration of deer weight loss, more and more States had fallen. If the lips die, the teeth will feel the same. Many deer farms were definitely facing difficulties. In order to avoid going bankrupt, they could only sell their own deer with tears in their eyes. After selling all of them, they would either switch to other animals or simply close down.
There were 400 deer farms in Minnesota alone, which meant that there were at least a few thousand of them in the United States.