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This animation demonstrates the anatomy of birds through the example of mallards.
The best known cartilaginous fish, sharks, do not chew their food; they use their razor-sharp...
Let’s see how a bear, which the most popular chidren's toy was modelled after, lives in real life.
One of the most common types of flatworms.
Fish-like marine dinosaurs which resembled dolphins; a good example of convergent...
Extinct proboscidea closely related to today´s elephants, often hunted by prehistoric man.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Based on their life cycle, insects can be grouped into three categories: ametabolous,...