They have twice as many olfactory genes as dogs and 5 times as many as humans
                                
                                
                                    (Newser) -
                                    Dogs may hold the reputation as having the best noses among mammals, but when it comes to the number of genes associated with smell, the elephant stands alone. By a mile. New findings published in Genome Research suggest that African elephants have 2,000 active olfactory genes, the highest number...