To dream of a cow implies that you are content with following instructions and not causing an argument. You tend to be submissive and meek. It may also indicate that you seek comfort and protection or you wish to nurture others. In some societies, cows are symbolic of fruitfulness, sustenance, and maternity.
To see a cow with a skeleton face implies that your relationship with your mother isn't very close and you don't share your feelings with each other. You feel as if she doesn't provide you with your needs and requirements.
To see a herd of cows means that you want to be accepted by others and be a part of a group, society, or organization.