Nymeria (direwolf)

Nymeria is one of six direwolf cubs found by the children of House Stark. Nymeria is adopted and raised by Arya Stark.

Season 1
Arya names her direwolf after a fearsome warrior-queen, and also trains her to help her pack for the journey south to King's Landing. Nymeria accompanies Arya as far as the Crossroads Inn, where, during an altercation between Arya and Prince Joffrey Baratheon, Nymeria defends her mistress by biting Joffrey's hand. After Nymeria's attack on Prince Joffrey, Arya sends Nymeria away so she will not be executed. Whilst this plan is successful, Queen Cersei instead orders the execution of Sansa's direwolf Lady in Nymeria's place.

Nymeria's current whereabouts are unknown.

In the books
In the Song of Ice and Fire novels Nymeria is an exuberant and playful wolf, but is also fiercely defensive of Arya Stark. Arya names Nymeria for the warrior-queen of the Rhoynar who led her people to safety in Dorne, a thousand years before the events of the series.

According to the TV series official pronunciation guide developed for the cast and crew, "Nymeria" is pronounced "Nigh-MEER-ee-uh", as opposed to "Nih-MER-ee-uh".