In England and Wales it is called Year 6 and the pupils are usually 10 to 11 years old. Often it is the seventh year of school; the years being called Reception, Year 1, Year 2, Year 3, Year 4, Year 5 and Year 6.
Quick Answer. According to Animals Australia, the natural lifespan of a dairy cow is approximately 20 years. The average lifespan of a beef cow is 15 to 20 months.
The life of a dairy cow varies from farm to farm and from cow to cow; some can live for as long as 20 years while others may have a much shorter life. Dairy farmers work hard to keep cows healthy for a long productive life. However, removing cows from the dairy herd is a common practice that allows farmers to bring in new, more productive cows, thus ensuring a steady supply of milk. Meat from cows that are no longer milking is a valuable source of safe and nutritious food.