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.
CATTLE CARE. Physiology of Cattle. The average lifespan for cattle is 18 to 22 years, although they can live in excess of 25. years. Because many rescued animals have come from abusive conditions, however, these cattle may have more health problems and a shorter life span than other cattle.