I've heard of selling milk, goat's milk, why doesn't anyone sell pig milk? Could it be these 4 reasons?

{"info":{"title":{"content":"听说过卖牛奶，羊奶，为什么没人卖猪奶呢？会不会是这4个原因呢","en":"I've heard of selling milk, goat's milk, why doesn't anyone sell pig milk? Could it be these 4 reasons?"},"description":{"content":""}},"items":[]}