The sizes of ours eyes are the same for all babies and the same for all adults. Also, our ears and nose never stops growing.

NOTE: Baby eyes are approximately 16mm at birth and grow to approximately 24mm in adults for all sexes and ethnic groups. Ears and nose get larger due the effect of gravity. It is thought that their cartilages stop growing by late teens.

 

The temperature is at its coldest an hour after sunrise because the planet continues losing heat after sunrise.

The fastest bird is the peregrine falcon with a dive speed of more than 200 miles per hour.

 

The bee humingbird lays the smallest eggs of any bird on Earth. The eggs are about the size of a coffee bean or a garden pea, reportedly weighing 0.4g (0.014 oz). The bee hummingbird is also the world’s smallest bird. The females weigh about 2.6 g (0.092 oz) and are 6.1 cm (2.4 in) long with the males weighing at 1.95g (0.069 oz) and 5.5 cm (2.2 in) long.

 

If all the blood vessels in the human body were laid end to end, they would reach about 60,000 miles and could circle the Earth twice.

 

Around 150 litres of blood flow through your kidneys in one day.

Placed end to end, all blood vessels in the human body would measure around 60,000 miles or 99,000 kilometers.

 

Alligators lack sex-determined chromosomes so temperature determines their gender (between 30-33oC or 86-91.4oF). They give birth to females in slightly colder temperatures and to males in slightly warmer temperatures.

 

The lizard tuatara possesses a third eye for ultraviolet light known as parietal eye, which is only visible in hatchlings and disappears after a few months.

The water animal Hydra appears not to age or die of old age because of its regenerative ability.