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 average lifespan of a cow is 18 to 22 years, but some can live 25 years or even more. You can guess the age of a cow that has horns by counting the number of rings on the horns. Cows have almost total 360 degree panoramic vision and are able to see colors, except red. They can detect odors up to 5 miles away.