Giant Rhino

This rhinoceros was a summon of Pain.

Appearance
Resembling a normal rhinoceros but with small wings on its back, it had a number of body piercings and Rinnegan, implying it is being controlled by Pain as well as dark marking around its eyes. It also had a giant chakra receiver stuck in its forehead. It also had big pointy ears and a small tail.

Abilities
Because of its sheer size and nature, it had great brute force, able to destroy an entire building after charging into it. Like the rest of Pain's summons, it shares a visual link through the Rinnegan. It also had a small pair of badly damaged wings, though it is unknown if it was ever able to fly.

Tale of Jiraiya the Gallant
In the anime, it was summoned by Pain's male Animal Path in Amegakure, to fight Jiraiya. As it charges his shadow clone, he barely dodges it. As it goes to attack him again, it was intercepted and defeated by Gamaken.

Pain's Assault
In Konohagakure, after the village's Intelligence Division building was discovered, it was summoned by Pain's female Animal Path, and bursts inside. In the anime, it fought Ibiki Morino, but was ultimately immobilised after being imprisoned. However, after Ibiki was defeated by the Animal Path, it broke out of its confinement and charged at the Konoha Torture and Interrogation Force. It was later de-summoned before Pain destroyed the village, only to be re-summoned again afterwards to fight Naruto Uzumaki. As it charged at Naruto, it was stopped in its tracks and thrown in the air by him, where it was then finished off by Gamaken.