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.
Rating Newest Oldest. Best Answer: Cows live into their late teens or early to mid twenties, if they're left to die of natural causes. Farmed cows though, are slaughtered much earlier. A beef cow can be only 3, 4 or 5 years old (or younger), and dairy cows are slaughtered between 7 & 9 years of age. This occurs because their milk production drops off, and because of the constant calving required to keep the milk in production, the cows bodies' literally wear out.