Milk and cows

[shubla]

Cows with unique names should give more milk. Cows with alphabetic letters (no rumbers or special letters) Ones with default name would yield less milk.
http://news.discovery.com/animals/dairy-cows-with-names-produce-more-milk.htm

[Teleskop]

yeah and give us ultra rare chance for a cow that would yield chocolate milk

[Sevenless]

It would be interesting if every once in a while you produced a super cow. No genetics, gives birth to regular cows, but has some neat trait attached to it.