How was horton killed?

In the "Horton Hears a Who!" story, Horton the Elephant is not killed; rather, he faces adversity and ridicule for his belief in the Whos, a tiny community living on a speck of dust. The narrative emphasizes themes of loyalty and perseverance, showcasing Horton’s determination to protect the Whos. Ultimately, he is rewarded for his kindness and bravery, highlighting the importance of standing up for those who cannot stand up for themselves.