My views on objective morality

[Mister Agenda]

I dunno, I feel like Catholic dogma gets complicated when you try to call God a "person", perhaps "being" is the right word. However on that point I'm fairly certain it's considered impossible for Catholics to even attempt to hold God to a certain standard; it's God's standard in the first place, and intended for humans only (it doesn't apply to animals), so presumably the Catholic argument would be that God can pretty much do whatever he wants without violating morality, because morality is something to be subjected upon human beings. There's also the argument that anything God does is inherently moral by the very nature of God and objective morality. It gets confusing very quickly.

True, three persons in one being, according to the Catholic faith, but we are made in the image of God as persons (in other words, like him).

So ok, if that's the case, using that reasoning about God, why not extend this to other entities as well? What is it about being human that makes a human being standing by and watching someone else harm a third person be morally wrong that they be held accountable for not stopping the offender if they had the power to do so?

If it's something to do with rationality or having a moral sense or whatever, then why should God be treated any different (since he has those as well)?

Human beings set rules for their pets and livestock that don't apply to them. It would be silly to make a rule about the dog not being on the bed that applies to you, too. Even if you consider your dog  a person; they're not your equal and don't get to hold you to the same standard to which you hold them.