Cow DNA - Bos Taurus

The double-stranded DNA molecule is held together by chemical components called bases.
Adenine (A) bonds with thymine (T); cytosine(C) bonds with guanine (G)
These letters form the "code of life"; there are estimated to be about three billion base pairs in the cow genome wound into 31 distinct bundles, or chromosomes.
Written in the DNA are possibly 30,000 genes which cow cells use as starting templates to make proteins; these sophisticated molecules build and maintain the animal's body. BBC