It was built in 106-113 CE on orders of the Senate in the time of emperor Trajan. The motive was to commemorate Trajan´s military victories in the Dacian wars. The colum is ornamented with low relief sculpture that tells about the campaigns of the Roman armies in Dacia. It still stands in Rome in the Trajan´s Forum.
The big five are Lion Leopard Elephant Buffalo Rihno Sometimes the
Cheetah is included instead of the Buffalo, but these are the species
refered to as the big five.