why are chihuahuas small

Why are chuhuahuas so small?A newfound stretch of doggie DNA prevents Chihuahuas from growing as big as Scooby Doo. ... thats they are so small.

                             this is so small that it can fit in your hands.  

                                                                    it can fit in a teacup

                         they are so small but they are still cute.                                                                                                  See full size image