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.