Americans don't want an atheist president

All animals appear to have a "moral code", which is instinctive. Evolution created basic morality, not religion.

Explain.

Some common examples:
- Animals do not, in general, kill their own kind, except in very specialized circumstances. With some species you see a specific "surrender" behavior which allows the loser to retreat instead of being killed.
- In higher species, mothers protect their young. Herd or pack animals protect the young collectively.
- Animals that compete tend to "fight fair". Peacocks try to impress mates with their tail feather display, and weaver birds do it with the nests they build, but you don't see peacocks tearing each other's tails out, or weaver birds breaking each other's nest.

Now, you might say, "Of course they would! a species that doesn't protect its young isn't going to last very long unless they spawn a *lot* of offspring".
Yes. That's evolution. Traits that contribute to survival, persist.
Oddly enough, many of the same "regulations for keeping order in society" that benefit human societies and make them prosper, do the same for animal societies. And so evolution selected for animals that adhered to such rules instinctively. Instinctively, meaning they don't "consider the right or wrong" of their actions, just as they don't consider the odds when deciding whether to fight or run. They do "the right thing" instinctively or they get weeded out of the gene pool.

By the time humans came around, they had, built-in, the same innate morality as apes do. They didn't need any gods to tell them Thou Shalt Not Kill or even Thou Shalt Not Steal. Look all over the world: native peoples in all the remotest corners all have the same basic codex: respect each other's lives and property, help each other and especially protect the young or weak. There are exceptions and variations, but basically it's all the same. And, according to Christianity at least, all their gods are man-made fakeries.