It was his own fault, for I didn't want to kill him.

这是他自己的错，因为我没想杀他。

youdao

Not only have they been known to kill and maim their own young, they also kill porpoises and play with their dead carcass for no apparent reason other than its fun.

不仅人们已经发现的他们杀害和弄残他们的幼仔，它们还会杀死鼠海豚，玩弄鼠海豚的尸体，并且毫无理由，似乎只为了玩耍。

youdao

The evil demon decided to kill his own son but each attempt failed.

暴君决定杀死自己的亲生儿子，但是每次企图都失败了。

youdao

Hercules thinks that it's Hyllos who wants him dead, and determines to kill his own son.

NPR: Heroic Obsession: Cavalli's 'Hercules In Love'

He marched his followers through Liberia's forests, abducting village boys, and often coercing them to kill their own parents.

WSJ: Charles Taylor Sentenced to 50 Years

Joseph Kony forces kids to kill their own parents and mutilate people's faces.

CNN: Opinion: After Kony, should kids decide our morals?