<Table> <Tr> <Th> Species </Th> <Th> Brain : body mass ratio ( E : S ) </Th> </Tr> <Tr> <Td> small ants </Td> <Td> 1 : 7 </Td> </Tr> <Tr> <Td> tree shrew </Td> <Td> 1 : 10 </Td> </Tr> <Tr> <Td> small birds </Td> <Td> 1 : 14 </Td> </Tr> <Tr> <Td> mouse </Td> <Td> 1 : 40 </Td> </Tr> <Tr> <Td> human </Td> <Td> 1 : 50 </Td> </Tr> <Tr> <Td> cat </Td> <Td> 1 : 110 </Td> </Tr> <Tr> <Td> dog </Td> <Td> 1 : 125 </Td> </Tr> <Tr> <Td> squirrel </Td> <Td> 1 : 150 </Td> </Tr> <Tr> <Td> frog </Td> <Td> 1 : 172 </Td> </Tr> <Tr> <Td> lion </Td> <Td> 1 : 550 </Td> </Tr> <Tr> <Td> elephant </Td> <Td> 1 : 560 </Td> </Tr> <Tr> <Td> horse </Td> <Td> 1 : 600 </Td> </Tr> <Tr> <Td> shark </Td> <Td> 1 : 2496 </Td> </Tr> <Tr> <Td> hippopotamus </Td> <Td> 1 : 2789 </Td> </Tr> </Table>
<Table> <Tr> <Th> Species </Th> <Th> Brain : body mass ratio ( E : S ) </Th> </Tr> <Tr> <Td> small ants </Td> <Td> 1 : 7 </Td> </Tr> <Tr> <Td> tree shrew </Td> <Td> 1 : 10 </Td> </Tr> <Tr> <Td> small birds </Td> <Td> 1 : 14 </Td> </Tr> <Tr> <Td> mouse </Td> <Td> 1 : 40 </Td> </Tr> <Tr> <Td> human </Td> <Td> 1 : 50 </Td> </Tr> <Tr> <Td> cat </Td> <Td> 1 : 110 </Td> </Tr> <Tr> <Td> dog </Td> <Td> 1 : 125 </Td> </Tr> <Tr> <Td> squirrel </Td> <Td> 1 : 150 </Td> </Tr> <Tr> <Td> frog </Td> <Td> 1 : 172 </Td> </Tr> <Tr> <Td> lion </Td> <Td> 1 : 550 </Td> </Tr> <Tr> <Td> elephant </Td> <Td> 1 : 560 </Td> </Tr> <Tr> <Td> horse </Td> <Td> 1 : 600 </Td> </Tr> <Tr> <Td> shark </Td> <Td> 1 : 2496 </Td> </Tr> <Tr> <Td> hippopotamus </Td> <Td> 1 : 2789 </Td> </Tr> </Table>
who has the largest brain in comparison to its size
who has the largest brain in comparison to its size
small ants
small ants