Mammals
This mammal's height can reach up to 6m
Giraffe
Snakes smell the air using this body part
Tongue
This bird is the symbol of the United States
Bald eagle
Amphibians usually begin life in this environment
Water
The largest fish in the world
Whale shark
The biggest mammal
Blue whale
This giant lizard lives on Indonesian islands and can grow over 3 metres long
Komodo dragon
This bird is the symbol of the United States
Hummingbird
This brightly coloured amphibian is famous for secreting powerful toxins
poison dart frog
The fastest fish in the ocean
Sailfish
This mammal is the only one truly capable of true powered flight
Bat
This reptile can detach its tail to escape predators
Gecko
Falcons and eagles belong to this group of hunting bird
Birds of prey (raptors)
Unlike frogs, these amphibians typically have dry, bumpy skin
Toad
This huge shark that can reach up to 10m feeds on plankton
Basking shark
Despite looking like rodents, these mammals are more closely related to elephants
Hyraxes
This reptile can run across the surface of water for short distance
basilisk Lizard
This bird migrates farther than any other bird, travelling from the Arctic to the Antarctic and back
Arctic tern
This amphibian can regenerate entire limbs, parts of its heart, and parts of its brain
axolotl
This giant ray, often mistaken for a shark, has the largest brain-to-body ratio among fish.
Manta ray
This mammal has the densest fur of any animal, with up to one million hairs per square inch
Sea otter
Some crocodilians can replace lost teeth throughout their lives, replacing as many as this approximate numbe
3'000
This seabird can remain airborne for months, landing only to breed
common swift
The world's largest amphibian, which can grow to nearly 2 metres long
Chinese giant salamander
This Arctic shark is believed to be the longest-living vertebrate, with some individuals estimated to be over 400 years old
Greenland shark