Body length2.5 tenths m
25Thumb tack lengths
1.6 billionCarbon atoms
104 millionthsNASCAR ovals
About 25 cm from nose to tail
Photo from Wikimedia Commons
Hedgehog
A spiny ball of attitude that can run 6 km per night/Small Animals
The European hedgehog (Erinaceus europaeus) is covered in about 5,000-7,000 spines, each about 2 cm long, made of keratin (the same protein as human fingernails). When threatened, it curls into a tight ball, presenting nothing but spines to predators. Despite their prickly appearance, hedgehogs are surprisingly fast runners and can cover 6 km in a single night while foraging for insects, snails, and the occasional garden slug.
Measurements
Weight1 kg
21.8Golf balls
8.5 thousandthsDwayne The Rock Johnson weights
200US nickels
About 1 kg; heavier before hibernation
Running speed1.8 m/s
1.2Elevator speeds
5.2 thousandthsSpeeds of sound
90Typing fingers
About 6.5 km/h; quick for a spiky potato
Spine length2 hundredths m
2.5Lego studs
1.2 tenthsiPhone Pro Maxes
1.1 hundredthsStep ladder heights
Each spine about 2 cm long
Nightly foraging distance6,000 m
22.3Titanic lengths
24,896Envelope lengths
Covers up to 6 km per night
Hibernation duration15.6 million s
740,571Mammal pees
8,640Pizza deliveries
10,368Pomodoro timers
About 5-6 months through winter