Once the pregnancy is over, a new calve will be born: it can then be sold on the marketplace, or evolved into a fully grown bull (or cow!).
The resulting NFT will be naked, meaning they will not have any special attribute on them, but they will have their common attributes (like tail and horns) rolled randomly.
The skin rarity of the parents, represented in the colors of the calve, will have an influence of 90% over the rarity of the resulting bull, following these tables:
As an example, a gold DNA with a golden cow will have a 90% chance to produce a golden bull via breeding, while a brown cow bred with gold DNA will have a 45% chance to produce a brown bull and 45% to produce a gold bull. PS: Each calf has a 1% chance to evolve into a cow!