The ant's eyes observed what went wrong, and how did he make up for it?

I once passed through the Western Hills and saw a child cut off two tentacles on the head of a big ant caught in a pine tree and let them fight and bite each other until they died. I asked the children why, and they said, "Ants use their tentacles as their eyes. When they walk and move, observe them from left to right first, so that they can walk fast. Once he loses his tentacles, he cannot walk. I also hate that I can't see it, so I fight with each other for this. " I tried, and I did. I said that ants use tentacles as their eyes to see things, which is unheard of since ancient times. Besides, ants are not without eyes, and they must use tentacles to move, which is also very strange. That's it, waiting for someone who knows what to do (answer).