Jaguar

Jaguars are Talking Beasts and inhabitants of Narnia.

They were first seen by the Pevensies as the apparent personal attendants of Aslan, as they stood by his side, holding his crown and standard.

Description
Talking leopards and jaguars were approximately the same size as the dumb ones of our world, apparently. Like on Earth, the sharp claws and teeth of Narnian leopards help them bring down their enemies swiftly, and they are so strong that they can haul their kills into trees.

In appearance, both terrestrial and Narnian leopards have markings very similar to those of Cheetahs (a cheetah's skin is spotted, while a leopard's is marked by black rosettes). In actuality, however, they are more closely related to Lions, Tigers and Jaguars.

History
Leopards and jaguars came from the ground when Aslan called them at the dawn of Narnia's history, and the Lion gave them speech and intellgience, along with all of the other Talking Beasts.

They were among those that chased after Andrew Ketterley, when they thought that he might be the evil that Aslan had warned them about (or the Neevil, as they pronounced it).

They were also present at the coronation of King Frank I and Queen Helen, the first monarchs of Narnia.

During the Winter Revolution, many talking Leopards fought and served in Aslan's Army.

When the Pevensies first met Aslan, two leopards stood beside him, one holding his crown and one his standard. Two leopards (possibly the same two) were sent to make sure Aslan's terms were met when the White Witch asked to meet with him. They also fought in the First Battle of Beruna.

Leopards and jaguars took part in all of the major events and battles in Narnia until Aslan ended the Narnian World in 2555 NY, but there is no significant mention of them in any Narnian history after the Winter Revolution.

Film Adaption

 * In the The Chronicles of Narnia: The Lion, the Witch and the Wardrobe (film), Leopards, jaguars and cheetahs were among the big cats that were seen leading the charge at the First Battle of Beruna. One attempted to pounce on the White Witch from above a cliff, only to be turned to stone by her. Another leopard or cheetah is seen fighting a werewolf.
 * Another leopard was seen in the White Witch's Courtyard, turned to stone, but was revived by Aslan and being identified as a jaguar.
 * In the The Chronicles of Narnia: Prince Caspian (film), several leopards are seen including a melanistic leopard (Black panther).