Brain

                                             
  Did you know that your brain is 20 times bigger than a dog's brain?

   400 times bigger than a crow's brain?

1,000,000 times bigger than mosquito's brain?


                Worm BRAINS


Their brains have 302 nerve cells.In contrast,the human brain has 100,000,000,000(billion) nerve cells.


            

       Cockroach BRAIN  



The cockroach doesn't have much of brain either.It has three collections of nerve cells called ganglia that do the work of  a  brain.                                                                                                 
         


                            Gorilla Brains 

Gorillas are like human in a number of ways.They live in families and may form tribes with forty or more members.

                               
                        A gorilla beats
                        his hairy chest 
                        to tell the wold
                        he is the best.