I don&#x27;t think we can get good infra-red vision.<p>Creatures with infra-red vision are usually cold blooded. We shine too brightly in infrared from within to be able to see something outside.<p>But tetrachromacy should rightfully belong to us. It was lost by our pre-mammal ancestors, while reptiles still have base tetrachromacy, and some fish perceive even more colors.<p>Most animals only perceive two colors and grow two pigments. Makes animal coloring (and animal world) kind of boring for us. Birds use bright colors because they can distinguish them.