Vet Eamon O'Connell: 'Calves are by far the most vulnerable animals when turned out at this time of year' Also, don’t be afraid to keep the cows indoors for a night if conditions are particularly bad. There seems to be a fear of bringing cows back in, as if it is a failure of some kind in the eyes of neighbours or rival farmers. You don’t have to tell anyone — if the neighbours don’t know and you didn’t post it on social media, did it even happen? Suckler cows don’t have it as good as dairy cows, in that, once they are turned out to grass, that’s it.