Let every fox take care of his own tail

While between two stools my tail go to the ground

Like Aesop's fox, when he had lost his tail, would have all his fellow foxes cut off theirs

Don't take the bull by the horns, take him by the tail; then you can let go when you want to

There is nothing so eloquent as a rattlesnake's tail

What the lion cannot manage to do the fox can.