The religious would have us believe intelligent design...  I don't wish to convert anyone, but I'll state what I learned.  I raised & studied wolves & hybrids for 20 years.  Started with white Siberian Wolf and white G. Shepherd mix.  Recessive genes?  I gradually increased wolf % in hybrids.  A number of mutations * occurred!  A few, in nature, might have led to new, survivable kinds.  Others were degenerate.  It's too much to go into here.  My point is that it all appeared RANDOM!  No intelligent design!  Methinks evol.= random!