Excitdaily on Instagram: "Swedish musician Mattias Krantz rescued a young octopus named Tako from a Seoul fish market and spent six months gently training him to tap piano keys using shrimp rewards. The documentary he later released highlights the remarkable intelligence of octopuses—creatures proven in research to solve problems, recognize patterns, and even use tools. The video has also sparked conversations about the ethics of keeping cephalopods as pets, with many viewers comparing the unexp