Unfortunately, during drought, there is a lot of pressure on nature. Many animals have died of thirst, The weather is extremely harsh,
The hippo and its offspring were likely forced to move to another land to find water to survive the drought season.

Unfortunately for them, on the way, it encountered a herd of hungry lions
The hippopotamus seemed tired and probably spent a lot of time traveling a long way to find an alternative source of water. When it saw the lions it was not afraid and ran away

Although the code was hideous and dangerous, the lack of drinking water made it very tiring. It seems to have surrendered to fate, accepting death to become a meal for the lion.