Ground Pangolin
When threatened, a ground pangolin rolls into a tight ball of overlapping scales that even a lion cannot bite through.
Mammal
Groundhog
During hibernation, a groundhog’s heart rate falls from about 80 beats a minute to as few as 5, and its body temperature drops to just a few degrees above freezing.
Harbor Seal
Harbor seals can follow the invisible water trail left by a fish using only their whiskers, even when the trail is over half a minute old.
Hippopotamus
Hippos secrete a reddish fluid that works as a natural sunscreen and may help protect against bacteria.
Honey Badger
The honey badger’s skin is so thick and loose that it can twist around inside it to bite an attacker that has grabbed it.
Howler Monkey
Howler monkeys are among the loudest land animals: their roars can carry about 5 km through the forest.
Humpback Whale
Male humpbacks sing complex songs that can last up to 20 minutes, and whole populations change their song over time as new versions spread.
Iberian Lynx
In 2002 fewer than 100 Iberian lynx survived; by 2023 there were more than 2,000, and the species was downlisted from Endangered to Vulnerable in 2024.
Impala
Impala can leap about 3 metres high and 10 metres long, often bounding over bushes or even other impala when fleeing predators.