I learned some about animal vision, and the fact that many birds can see into the UV spectrum. Made me wonder what the world looks like to them, with all these "hidden" colors we can't even see! (And there are animals like cuttlefish and mantis shrimp that see even more wavelengths!)

YES!!!! Or you think about their senses of smell and hearing and it far surpasses our own. And who knows what other senses animals may have because we ourselves can't perceive of it!!