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The dromedary, also known as the Arabian camel, is a highly valued and indispensable animal for...
Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.
The California kingsnake is one of the most popular species of pet reptiles. It was named after...
A fascinating aquatic insect species that is able to 'walk' on the water using surface tension.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult...
The animation demonstrates the most important types of feathers and their fine structure.
The striped horse of the savannahs that pedestrian crossings were named after.
A mammal with features typical of reptiles: it lays eggs and has a cloaca.