The lions should consider themselves lucky. The mongoose let them live.
In 2011, wildlife photographer Jérôme Guillaumot was in the Maasai Mara National Reserve in Kenya. He captured this incredible encounter. 4 young lions thought that the much smaller mongoose would make a good snack. But the mongoose's sheer savagery was frightening to them. It retreated into its den safely.
But that didn't end the encounter.
The mongoose wasn't satisfied to let the lions prowl around the surface. So it came out of its den and chased them away!
-via Twisted Sifter