I can see why you might believe that, but it's simply not true. There are countless well documented examples and scientific studies that show that animals exhibit all the traits you describe. Chimpanzees show compassion by consoling victims of aggression [0], being especially attentive to others with whom they have a closer bond. They have friends and relatives just like we do, they value those social structures just like we do, and they choose to give them emotional support, without getting anything in return.
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.
Neural imaging on animals has shown that their brains both have the same features that ours do for these purposes and they use them in similar ways. All of this is not even remotely controversial, it's well understood and thoroughly studied across numerous decades.
Of course animals exhibit teamwork, but they do not have a free will that can choose compassion in the face of its opposite, selfishness.
You can note all the abstract thought that animals exhibit, perhaps some equations on a chalkboard?
> 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.