Hares And Hounds

The reality of the animal kingdom is that a creature is either a hare or a hound; that cannot alter that simple fact. The expression "to run with the hares and chase (or hunt) with the hounds" means that someone changes sides when it suits them or the situation makes it seem advantageous. However, in the long run, they will find it simply doesn't work. It shows a lack of loyalty and principles. You will end up being trusted by no one.

Of course, that won't stop some people trying...