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.
Nearly all cows used for dairy in the U.S. are eventually slaughtered for human consumption. At an average of less than 5 years of age, exhausted cows are considered âspentâ and sent to slaughter, and millions of them are eaten by Americans as hamburger. In a natural setting, a cow can live more than 20 years.