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.
Cows will usually only produce one calf per year. On a rare occasion she may give birth to twins. A female can give birth to her first calf at two years of age, dairy cattle a â¦ re usually only able to produce for about 7-9 years. Beef cattle are usually able to produce for about 10-14 years.