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The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells of the next generation.
vertebrates, life cycle, development, ontogeny, reptile, amphibian, bird, mammal, fishes, common carp, kangaroo, grass snake, thrush, red deer, chicken, edible frog, nidicolous, placental, adult, marsupial, precocial, egg, embryo, tadpole, gill, lung, fertilisation, mating, soft-shelled egg, bird egg, breast, breast milk, placenta, fetus, incubation, nest, morula, fry, animal, spine, biology
The largest land mammal on Earth.
The spinal cord is the part of the central nervous system running inside the spinal column from which spinal nerves branch out.
The axolotl, also known as Mexican salamander, is an amphibian species that keeps its gills even in adulthood.
This animation demonstrates birds' bones and eggs through the example of the common blackbird.
Freshwater fish used as food in many parts of the world.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
Darwin's legendary voyage aboard HMS Beagle played a crucial role in the development of the Theory of Evolution.
Several analogous types of eyes have developed independently through convergent evolution.
One of the largest marsupials.
This animation demonstrates the anatomy of amphibians through the example of a common species of frogs.
A type of snake with a characteristic spot on its neck.
Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
Marsh harriers are birds of prey found almost worldwide.
Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.
Reindeer are the northernmost deer species.
The dentition of different species of mammals reflect their feeding habits.
During the evolution of vertebrates the relative development of brain areas has changed.
Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.