what different animals can be seen here?
Horses.
Rohan (Middle-earth)
armies of Rohan were largely horsemen. The basic tactical unit was the "éored", Old English for "a unit of cavalry, a troop", which at the time of the War of the Ring had a nominal strength of 120 riders. 
In time of war, every able man was obliged to join the Muster of Rohan. Rohan was bound by the Oath of Éorl to help Gondor in times of peril, and the latter asked for their aid through the giving of the Red Arrow. This has a historical antecedent in the Old English poem "Elene", in which Constantine the Great summoned an army of mounted Visigoths to his aid against the Huns by sending an arrow as a "token of war". Gondor could also call the Rohirrim in need by lighting the warning beacons of Gondor, a series of signal fires along the White Mountains from Minas Tirith to the Rohan border: "Amon Dîn", "Eilenach", "Nardol", "Erelas", "Min-Rimmon", "Calenhad" and "Halifirien".

where is rohan in lord of the rings It is bordered to the north by the Fangorn forest, to the northeast are the walls of Emyn Mui, to the east are the mouths of the River Entwash, and the Mering Stream, to the south lie the White Mountains and to the west are the rivers Adorn and Isen. how did it get it's name? Tolkien used Old English for the kingdom's language and names. which is it's capital city? Edoras. which language is spoken there? Rohirric or Rohanese. has it appeared in any form of art? UNANSWERABLE what kind of people can we find here? They have an Anglo-Saxon culture and language, with Gothic attributes.
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Rohan (Middle-earth) [SEP] Horses and warfare
The armies of Rohan were largely horsemen. The basic tactical unit was the "éored", Old English for "a unit of cavalry, a troop", which at the time of the War of the Ring had a nominal strength of 120 riders. In time of war, every able man was obliged to join the Muster of Rohan. Rohan was bound by the Oath of Éorl to help Gondor in times of peril, and the latter asked for their aid through the giving of the Red Arrow. This has a historical antecedent in the Old English poem "Elene", in which Constantine the Great summoned an army of mounted Visigoths to his aid against the Huns by sending an arrow as a "token of war".