I'm gonna take a step back here for a moment and this isn't directed at you specifically.
When atheists ask you these questions like "why does god allow evil" we aren't actually looking for an explanation because lets be quite honest, there isn't a good one. The problem is the fact that the question can even be raised, it illustrates a greater point.
Personally, I'm fine with people who pick an old book and use it to justify their belief in god. "This book says there is a god, I believe it." it's at least logically sound. It's the very second you have to appeal to things outside of the bible to justify it, it all starts to fall apart. You know damn well the bible doesn't articulate "free will" and distinctions between man and animals like you say it does, you are INTERPRETING the words to mean other things. Or, at least relying on other peoples interpretations. People coming together for a consensus on a given topic, that sounds more like science to me. If the bible is the word of god, and it can convince people of his existence, then it should be entirely self-contained. Every possible answer should already be there, it shouldn't rely on people interpreting it to make it fit with modernity.
You are somehow able to speak on animal psychology and morality, but you know damn well the bible isn't your source for that. Its simply that you have a presupposition and you are trying to make reality conform to it at all costs. It's backwards.