Peter's Unicorn was a white, unnamed Unicorn that served as Peter Pevensie's mount during sword practice at Aslan's Camp, and at the First_Battle_of_Beruna_(Walden).
During the battle, the White Witch's Dwarf, Ginarrbrik, shot the Unicorn in the flank with an arrow, causing him to stumble and consequently throw Peter off (the fall left Peter temporarily stunned, but not unconscious), but the unicorn managed to survive as it struggled to get back up. The unicorn later recovered from its injury, most likely due to Lucy's Cordial.
The unicorn was also present at the Pevensies' coronation after the battle.
Nothing else is known about it.
Trivia[]
In the original script, unlike in the final cut, Peter's unicorn demonstrates that he is capable of speech. The original script also has Peter's unicorn and Otmin mortally wound one another during the First_Battle_of_Beruna_(Walden).