《搜神记·卷三》
严卿说： 花狗也可以，但它的毛色不纯一，还是有点遗憾，到时候还会馀下一点小小的毒汁，不过它至多只会危害到六育之类罢了。
卿曰： 驳者亦足。然犹恨其色不纯。当余小毒，止及六畜辈耳。
Yan Qing said: "A spotted dog is also okay, but it has an impure fur color, so it's still a little regretful. At that time, there will still be a little bit of residual venom, but it will only endanger things like the six disciplines at most.