I have zero sympathy for OP. They hurt an animal and didn't show any remorse for it. They absolutely deserved to get fired. People that hurt animals or children without remorse deserve every bad thing they get.

Can you quote for us the section of the post where the OP said they exhibited no remorse? Or are you genuinely saying a verbal utterance of "I'm sorry" to a being that doesn't speak English is literally the only possible way in the entire lexicon of interpersonal interactions to express sympathy or regret? And regardless, momentary discourtesy is grounds for being fired, then? I think you're now obligated to either quit your job, or admit to being a hypocrite, because it's guaranteed at some point in your life you've been at LEAST as callous as you're assuming the OP was. If that deserves the loss of one's job, put your money where your mouth is and act like it instead of just applying the rule to other people.

He didn't need to say it. The part where he didn't apologize said it for him. I highly doubt that he would have been fired if he had shown some remorse. And I'll apologize for merely inconveniencing someone if I'm at fault. Don't assume I'm callous. I just don't suffer assholes like yourself.

You assert you've never once in your entire life been even the tiniest bit discourteous to anyone for any reason in any situation - while calling someone an asshole for daring to point out you just MIGHT not be perfect. Hypocrite it is, then. The rules apply to everyone but you.

If I'm discourteous to someone, it's because they deserve it. Like you for instance, seeing as you're an asshole. But that's not callousness, it's just not putting up with assholes. I follow the rule of "Don't put up with douchebags." No hypocrisy there. You're just desperately trying to find any excuse to turn my statement against me. But seeing as you have never met me, you still somehow assume my behaviour is in a set pattern. You know how I know you're an asshole? Pretty much every thing you've typed in response to me.