Cerebral Cortex
Only mammals appear in this list, because only mammals have a cerebral cortex (although the pallium of reptiles and birds is also frequently referred to as "cortex".)
| Name | Neurons in the cerebral cortex | Details | Image | Source |
|---|---|---|---|---|
| Mouse | 4,000,000 | Genus Mus, unknown species | ||
| Rat | 15,000,000 21,000,000 |
Genus Rattus, unknown species | ||
| Hedgehog | 24,000,000 | Subfamily Erinaceinae, unknown genus and species | ||
| Opossum | 27,000,000 | Family Didelphidae, unknown genus and species | ||
| Dog | 160,000,000 | Canis lupus familiaris | ||
| Cat | 300,000,000 | Felis catus or Felis silvestris catus | ||
| Tarsius | 310,000,000 | Genus Tarsius, unknown species | ||
| Squirrel monkey | 430,000,000 | Genus Saimiri, unknown species | ||
| Rhesus macaque | 480,000,000 | Macaca mulatta | ||
| Gracile capuchin monkey | 600,000,000–700,000,000 | Genus Cebus, unknown species | ||
| Horse | 1,200,000,000 | Equus ferus caballus | ||
| Night monkey | 1,500,000,000 | Genus Aotus, unknown species | ||
| Fin whale | 1,500,000,000 | Balaenoptera physalus | ||
| Guenon | 2,500,000,000 | Genus Cercopithecus, unknown species | ||
| Pilot whale | 3,000,000,000 | Genus Globicephala, unknown species | ||
| Gorilla | 4,300,000,000 | Genus Gorilla, unknown species | ||
| Bottlenose dolphin | 5,800,000,000 | Genus Tursiops, unknown species | ||
| Chimpanzee | 5,500,000,000 6,200,000,000 |
Genus Pan, unknown species | ||
| False killer whale | 10,500,000,000 | Pseudorca crassidens | ||
| African elephant | 11,000,000,000 | Genus Loxodonta, unknown species | ||
| Human | 19,000,000,000–23,000,000,000 | For average adult "The average number of neocortical neurons was 19 billion in female brains and 23 billion in male brains." |
Read more about this topic: List Of Animals By Number Of Neurons