what is an average life span of a cow
Confidence votes 25.5K. The average life of a cow is up to 20 years if they are kept in good conditions and has a proper diet. On occasion up to 25 years. Normal would be about 15 years. My wife works on a dairy farm they have at least one cow of 15 years of age that is producing milk, She is milked twice daily.he average life of a cow is up to 20 years if they are kept in good conditions and has a proper diet.