Zoology: the secret world of animals

The animal kingdom. What is an animal?

Evolution

Types of animals

Beetle diversity

Fish and amphibians

Reptiles and birds

Mammals

Prehistoric paintings

Shape and size. Symmetry and asymmetry

Forming colonies

Radial symmetry

Symmetry in motion

The darwinists

Comb jellies

Bodies with simple heads

Sexual differences

The renaissance eye

Segmented bodies

Vertebrate bodies

Frog body form

Shape shifters

Large and small

Fantasy beasts

Tall animals

Skeletons. Communal skeletons

Water skeletons

External skeletons

Exoskeletons on land

Chalky skeletons

Internal skeletons

Aboriginal insights

Vertebrate skeletons

Vertebrate shells

Bird skeletons

Cheetah

Mammal horns

Deer antlers

Skin, coats, and armor. Permeable skin

Getting oxygen

Toxic skin

Skin color

Forming a shell

Mollusk shells

Vertebrate scales

Reptile skin

Advertisement colors

In the mughal courts

Frills and dewlaps

Weapons and fighting

Blending in

Lichen katydid

Feathers

Flight feathers

Display plumage

Seasonal protection

Mammal fur

Expressionist nature

Skin glands

Horns from skin

Armored skin

Senses. Sensitive antennae

Sensory bristles

Small world

Sensory whiskers

Sensing under water

Tasting the air

Sensing heat

Electrical sense

Detecting light

Pupil shapes

Compound eyes

Color vision

Seeing depth

Common kingfisher

Scent detection

Smell in birds

Song birds

Smell in mammals

How animals hear

Mammal ears

Listening for echoes

Common dolphin

Mouths and jaws. Filter feeding

Christmas tree worms

Invertebrate jaws

Injecting venom

Vertebrate jaws

Bird bills

Bird bill shapes

Art of the ornithologist

Carnivore teeth

Giant panda

Eating plants

Flexible faces

Legs, arms, tentacles, and tails. Tube feet

Jointed legs

Vertebrate limbs

Vertebrate claws

Tiger

Sticky feet

Raptor feet

Climbing and perching

Mammal hooves

Alpine ibex

Arthropod pincers

Artists of the floating world

swinging through tree

Primate hands

Orangutan

Octopus arms

Stinging tentacles

Prehensile tails

Pintailed whydah

Fins, flippers, and paddles. Nekton and plankton

Blue dragon sea slug

How fish swim

Underwater wings

Fish fins

Swimming with the dorsal fin

Four-winged flying fish

Venomous spines

Empire of abundance

Walking on the seabed

Returning to water

Tail flukes

Wings and parachutes. Insect flight

Scaly wings

Gliding and parachuting

How birds fly

Lammergeier

Bird wings

Emperor penguin

Hovering

Egyptian birdlife

Wings of skin

Eggs and offspring. Making eggs

Fertilization

Parental devotion

Polar bear

Shelled eggs

Bird eggs

Marsupial pouches

From larva to adult

Amphibian metamorphosis

Reaching maturity

Classification

Glossary.