Which species of animals have the largest brains?
A) amphibians
B) reptiles
C) birds
D) mammals

Question

Quizplus · Accepted Answer

Mammals have the largest brain size on average, with some species like the sperm whale and elephant having brains weighing over 5kg. In comparison, birds have relatively large brains for their body size, but still smaller than most mammals. Reptiles and amphibians have much smaller brains in proportion to their body size.

Which Species of Animals Have the Largest Brains