Animals can be allergic to humans. Animals can be allergic to our dead skin cells – dander. These allergic reactions can be just like ours, too, including breathing difficulties and skin irritation.
There’s a planet mostly made from diamond. Called 55 Cancri e, it's around twice the size of Earth and some 40 light-years away from us within the Cancer constellation.
Insects can fly up to 3.25km above sea level, at least. Alpine bumblebees have been found living as high up as 3.25km above sea level and could even fly in lab conditions that replicate the air density and oxygen levels at 9km – that's just higher than Mount Everest.
Your nails grow faster in hot summer. This is probably due to increased blood supply to the fingertips. It could also be because you’re less stressed while on holiday so less likely to gnaw away at ‘em.
Most ginger cats are male. There are roughly three ginger male cats to one ginger female. This is because the ginger gene is found on the X chromosome, meaning female cats would require two copies of the gene to become ginger whilst males only need one.