* Humans (Homo sapiens): We're known for our advanced cognitive abilities, language, and complex social structures.
* Dolphins: These marine mammals have complex communication, problem-solving skills, and even exhibit self-awareness.
* Chimpanzees: Our closest living relatives, chimps are known for their tool use, social intelligence, and problem-solving skills.
* Elephants: These large mammals display incredible memory, complex social structures, and emotional intelligence.
* Pigs: Despite their reputation, pigs are incredibly intelligent, able to learn complex tasks and even play video games!
* Rats: Often underestimated, rats are highly adaptable and intelligent, making them useful in research and even therapy.
Ultimately, the "most intelligent" mammal is debatable, as intelligence is complex and can be measured in different ways. Which one you choose depends on your criteria for "intelligent"!