The best plan is, as the common proverb has it, to profit by the folly of others. - Pliny the Elder

All men possess in their bodies a poison which acts upon serpents; and the human saliva, it is said, makes them take to flight, as though they had been touched with boiling water. The same substance, it is said, destroys them the moment it enters their throat.

It is asserted that the dogs keep running when they drink at the Nile, for fear of becoming a prey to the voracity of the crocodile.

The bird of passage known to us as the cuckoo.