It’s a week to Hallowe’en so we are going to focus on the creatures of the night….

Here are ten batty number facts to start us off:

25: the percentage of all mammalian species that are bats.
3,000 metres: the greatest height at which bats have been tracked.
2 grams: the weight of the world’s smallest mammal : the bumblebee bat.

1,000: the number of times per minute a bat’s heart beats in flight.
10: the number of times per minute a hibernating bat’s heart beats

250,000; the number of bats that it is estimated are killed by cats every year in the UK.
200 tons: the weight of insects eaten each night by the 20 million Mexican free-tailed bats that live in Bracken Cave in Texas

1: the number of pups a female bat has each year.
13: the number of bat species that have been identified in Southwick Country Park Local Nature Reserve

0345 1300 228: the number of the National Bat Helpline

Header picture: greater horseshoe bat at rest (CC0)