This game needs cows

Jahrakajin: How would cows be beneficial to gameplay? They would be a obstacle, squishing them with a tank would be a mess (and way more offensive to certain religious believes then having them in the game in the first place) and next thing you know people would demand having other flora and fauna such as sheep, goats, cats tigers and various forum using rodents in game. 

Honestly I don't see this working out.