The human skull is the bony structure that forms the head in the human skeleton. It is formed by the bones of neurocranium and the bones of viscerocranium. The skull protects the encephalon and the sense organs.


The deer is the biggest wild herbivore in the Iberian Peninsula. It can weight up to 200 kilograms and its maximum length can reach two metres. A deer can be 1.5 metres high.


Parrot is the common name for around 340 species of bright colour including, among others, the cockatoos, the agapornis, the macaws and the parakeets. Parrots have specific features that make them different from other birds. Their size shows great variability depending on the species.


Elephants (Elephantidae) are a family of mammals from the Proboscidea order. In the past they were classified, together with other mammals of thick skin, in the Pachydermata order.


The emu (Dromiceius novaehollandiae) is the second largest living bird in the world, after the African ostrich. It used to live in most parts of Australia in the past, although is not very common nowadays. There was a Tasmanian emu subspecies that became extinct.


One of the most popular birds in the Mediterranean area of Spain, the hoopoe is very common in the meadows in the South of the Iberian Peninsula. It is easy to recognize it because of its distinctive crown of feathers and its undulating flight.


Squirrels are small mammals with slender bodies, with a long bushy tail. They range in size between 19 and 24 centimetres in lenght (the tail usually adds 15-20.5 centimetres). They weight between 18.6 and 35.7 grams.


The American Bison (Bison bison), also known as buffalo and cibolo (a name of Indian origin), is a species of mammal of the Artiodactyla order and Bovidae family.


The skeleton is the inner framework of bones that supports and gives shape to the human body. The number of bones an animal has varies throughout life.