Home Authors Posts by David Vallejo

David Vallejo

David Vallejo
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I've got a degree in Biology and I'm Environmental Educator. Throughout my career I have been able to carry out several projects, specially focused on environment and its learning. My passion is to communicate about the environment and contribute to its conservation.
A cute koala. By Yatra | Shutterstock.com

What are the longest sleeping mammals?

David Vallejo -
A herd of Eland or Taurotragus Oryx. By Sutirta Budiman

Population dynamics models: Levins and the source-sink theory

David Vallejo -
Owls Are The Order Strigiformes Constituting 200 Extant Bird Of Prey Species Most Are Solitary And Nocturnal. By Ammit Jack | Shutterstock.com

A bird’s-eye view: why sight is their most developed sense

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Polar Bear (Ursus maritimus). By Vaclav Sebek | Shutterstock.com

Are species larger in cold environments? The principles of Bergmann’s rule

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Giant panda climbing tree. By Hung Chung Chih | Shutterstock.com

Flagship species: Advantages and disadvantages of their management

David Vallejo -
San Miguel Island Fox. By Dominic Laniewicz | Shutterstock.com

Do all animals face the same extinction risk?

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Beautiful spider web with water drops close-up. By Aleksey Stemmer | Shutterstock.com

Architects of the animal kingdom: surprising structures

David Vallejo -
Iberian lynx. By omas Calle Boyero | Shutterstock.com

The IUCN Red List of Threatened Species: conservation status of species

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Central Bornean orangutan ( Pongo pygmaeus wurmbii ) in natural habitat. Tropical Rainforest of Borneo. Indonesia. By Sergey Uryadnikov | Shutterstock.com

Edge effects and habitat fragmentation: the main causes of species extinction

David Vallejo -
Wolf tracks (footprint) in the frozen snow. By Maksymus | Shutterstock.com

Field guide: identifying animal footprints, traces and signs

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Sexual selection. Great crested grebe. By Pim Leijen | Shutterstock.com

Reproductive strategies and mating systems: the foundations of sexual selection in...

David Vallejo -
White Camargue Horses galloping through water. Parc Regional de Camargue - Provence, France. By Sergey Uryadnikov | Shutterstock.com

Animal’s social behavior: Group living

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Become the Animal

Our portraits of animals wearing clothes are caricatures. They’re an artistic (and ironic) means of helping people identify with animals, bringing them closer to the animal world. Our site has lots of different features for you to explore. Welcome to the site, take a look around and find your animal side!

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