In "The Little Red Tortoise," why does the little red tortoise choose to try to defeat the giraffe?

The little red turtle tries to defeat the giraffe by clinging to the throat of this one, since it wants to charge all the lives of the other turtles, so the text says:

'Peep! Pip! "Said the little Red, and he kept his hard beak bent too. He thought: "No, too many of my nation have sailed this red sloot, I will not let it go.

But there does not end everything, the turtle tried to hurt the giraffe until he manages to drown her in the sand and kill her, and then go home to tell her about her mamma. His mom was very proud, because that way the nation would be at peace.

here the text:

"I tell you, baasjes, Oubaas Giraffe danced and pranced over the veld; I have screamed and bellowed; I have gurgled and swallowed; I tried to get the little Red Tortoise down, and I tried to get him up; but it was not use The little Red One clung fast to him till he was removed choked, and sank down in the sand and died.

"Then the little Red Tortoise crawled out, and went home to tell his Mam-ma that he had killed Oubaas Giraffe and that his nation could have peace again. Ach! but she was proud of him!