Could you hurt another living creature?

I could not as the song goes "Don't tread on ant it's done nothing to you there might come a day when it's treading on you" or what goes around comes around do you believe in that philosophy!
Update: OCD NO MATE JUST NOSEY!!
Update 2: I could NOT as the song goes "Don't tread on ant it's done nothing to you there might come a day when it's treading on you.

read the question I did not say I could not kill anything!!
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