Belgian animal sculptor Emmanuel Janssens Casteels works at his desk next to a replica of a Smilodon, an extinct genus of machairodont felid, in his workshop in Prayssas December 3, 2014. Casteels' company OPHYS specializes in life-size reconstructions and the sculpting or moulding reproductions of animals and hyper-realist fossils. His reconstructions are exhibited in museums and theme parks. (Photo by Regis Duvignau/Reuters)

Emmanuel Janssens Casteels, a Belgian animal sculptor, looks at a replica of a whale skeleton as he works in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

A worker paints a replica of cro-magnon skulls in the workshop of Belgian animal sculptor Emmanuel Janssens Casteels, in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works on a replica of an Australopithecus in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels holds a replica of a prehistoric crocodile in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works on a replica of a bison in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works on a replica of a Smilodon, an extinct genus of machairodont felid, in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works on a replica of a Smilodon's skull, an extinct genus of machairodont felid, in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels (R) and a worker carry a replica of young mammoth, as they work in their workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

A replica of a Velociraptor dinosaur is pictured in the workshop of Emmanuel Janssens Casteels in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels holds a replica of a prehistoric crocodile in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Workers work on animal replicas in the workshop of Belgian animal sculptor Emmanuel Janssens Casteels, in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works on replicas of animals in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels poses with a replica of a Smilodon, an extinct genus of machairodont felid, in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works on replicas of an elephant and a Tyrannosaurus dinosaur in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)

Belgian animal sculptor Emmanuel Janssens Casteels works at his desk next to a replica of a Smilodon, an extinct genus of machairodont felid, in his workshop in Prayssas December 3, 2014. (Photo by Regis Duvignau/Reuters)