Dolphins

How smart are dolphins really?

An exploration of dolphin cognition, separating scientific reality from common myths to understand how these marine mammals truly think.

Check your understanding

1. What does the 'mirror test' help scientists understand about dolphins?
- A. Whether dolphins can see colors
- B. If dolphins have a sense of self-awareness
- C. How fast dolphins can swim
- D. If dolphins can recognize other species
2. What is the purpose of a dolphin's 'signature whistle'?
- A. To attract fish for hunting their prey
- B. To communicate with other ocean species
- C. To act as a name identifying specific individuals
- D. To navigate around obstacles in the dark
3. Why do some dolphins carry marine sponges on their snouts?
- A. To play with them as toys
- B. To attract a mate
- C. To clean their teeth while swimming
- D. To protect themselves while foraging on the ocean floor
4. Which of the following describes the dolphin's 'smile'?
- A. It reflects their high level of happiness
- B. It is a result of their jaw anatomy
- C. It indicates they are ready to play
- D. It is a sign of communication

1. Why do scientists use the brain-to-body mass ratio to study dolphins?
- A. To prove that dolphins are physically stronger than humans
- B. Because it is an indicator used to estimate cognitive ability
- C. To calculate exactly how many calories a dolphin needs
- D. To determine the social status of a dolphin in the pod
2. What does the text suggest about the possibility of dolphins having a human-like language?
- A. They have a secret language that humans cannot translate yet
- B. They use grammar and syntax just like human speech
- C. There is no scientific evidence that they possess a language like ours
- D. They only use language to discuss food sources
3. What do the 'spindle neurons' mentioned in the text represent?
- A. The ability of dolphins to heal humans
- B. An adaptation that allows dolphins to withstand high water pressure
- C. Brain cells linked to advanced social and emotional processing
- D. The primary way dolphins echolocate in the dark
4. Based on the text, why is it inaccurate to call dolphins 'little humans'?
- A. Dolphins are not intelligent enough to be compared to humans
- B. Dolphins have human-like intelligence but lack the physical bodies for it
- C. Dolphins rely on their own unique evolutionary adaptations, such as echolocation, rather than human-style tools
- D. Dolphins have no social structure compared to human society

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