Survey Explains Why Some Animals Have Smaller Eyes: Lifestyle Matters More Than Size, ScienceDaily Bookmark and Share

Excerpts: If brain size is proportional to body size in virtually all vertebrate animals, Cornell University biologists reasoned, shouldn't eye size and body size scale the same way? While they failed to find a one-size-fits-all rule for eyes, what they learned about the 300 vertebrates they studied helps to explain how animals evolved precisely the orbs they need for everyday life. The biologists (...) say they did find a logarithmic relationship between animals' body weight and eye size for all vertebrates, in general: Bigger animals do tend to have bigger eyes, on average. (...)