And I wonder what percentage of our DNA matches up with a cow?
Probably a lot, being mammals and all.
Do you know WHY ALL animals have a certain amount of DNA 'in common', and why all mammals have MORE DNA 'in common', and so on?
Let's start with something more basic - why do you suppose ALL eukaryotes, from yeast to us, have a lot of DNA 'in common'?
If you answer, I will explain why I asked.
...The fact DNA was used on everything doesn't mean we evolved and it doesn't take God from the picture of creation.
If only the DNA issue were as simplistic and shallow as you seem to need it to be.
It is NOT that DNA 'was used on' everything. It isn't even really the total amount of similarity between taxa that is all that important - it is, but the real issue as far as discerning things like shared ancestry is the extent of shared, unique mutations. Because when we see shared unique mutations, we infer ancestry, and we do that because as has been posted on this forum many times, we have tested that notion on known phylogenies.
And FWIW, we need to pay attention not so much to the high percentage of like DNA, but the low percentage that isn't alike, that makes all the difference.
That is not worth much - that is creationist diversion.
Of course, the low percentage that is not the same gets larger the farther away we go from, say, humans and chimps.