4 ms·
Humans actually. "The brain to body mass ratio in some members of the odontocete superfamily Delphinoidea is second only to modern humans, and greater than all
by vlehto 11y ago
Humans actually. "The brain to body mass ratio in some members of the odontocete superfamily Delphinoidea is second only to modern humans, and greater than all other mammals"
https://en.wikipedia.org/wiki/Cetacean_intelligence https://en.wikipedia.org/wiki/Cetacean_intelligence
- pygy_ 11y agoBut their neuronal density is much lower. IIRC their high glia/neuron ratio is though to be an adaptation to sea life.
- Natanael_L 11y agoNeuron interconnectivity might be more important than plain neuron count. So that could be an advantage.