I tortured a rat when I was younger
Why did you torture a rat?
I don't know. It seemed fun to me at the time.
Rats are weird animals but it is not okay to torture them. People will think that you are a sociopath.
What? It's only a rat.
It's never okay to purposely cause pain to an animal. The fact that you don't think it's a big deal now worries me. Harming animals can be a path to harming humans.