Genesis 1:24-25
God Creates the Living Creatures
24 And God said, "Let the land produce living creatures according to their kinds: livestock, creatures that move along the ground, and wild animals, each according to its kind." And it was so. 25 God made the wild animals according to their kinds, the livestock according to their kinds, and all the creatures that move along the ground according to their kinds. And God saw that it was good.
Our Divine Designer created the living creatures according to their kinds...He used DNA to create the living creatures...And in using DNA and genes and cells many of species and "their kinds" were given similar genes...So it is of little surprise that many animals have four legs and have similarities...It is not surprising that most birds fly and also have similar characteristics...These similar characteristics were given to the animal kingdom by our Designer, when He used similar DNA and genes in each kind...God saw these characteristics and these similarities and liked them...And He saw that it was good...So there is goodness in design and the creative nature of the earth...