> Rats try and free restrained cage mates [1] and share their food with them, even though from a selfish perspective it would be better for them to eat the food and not share. They understand the other is suffering and try to alleviate it, just like we do.

That is all behavior that helps the survivability of the group, and is all explained by kinship theory. "You scratch my back, and I'll scratch yours."

As to brain structures, where are the animals' structures that allow the discovery, explication, and acceptance of General Relativity? It's not there, and there will never be a study that shows that they have them, because it is simply not possible.

Flogiston is not real, my friend, no matter how it appears to explain the physical transfer of heat and lack thereof. And the solar wind is real, no matter what Eugene Parker's contemporaries thought and fought all those years ago. Now the Parker Solar Probe is in space doing its work, and I am, too, in my own small way.