Aneru

 (also potentially translated as Arnel) is the Japanese name for an otherwise unnamed snake-like monster in The Adventure of Link. Its appearance is somewhat similar to that of a Rope, but its behavior is quite different.

Aneru is a seemingly eyeless snake or worm-like monster with a huge mouth that appears solely in Palaces, first appearing in Midoro Palace. They sit in place and jump while spitting rocks, similar in behavior to Octoroks in the same game, though like Octoroks, some will also move while attacking. Later in the game in the Great Palace, a red variety appears that spits fireballs that Link's shield cannot defend against. Link must use the Reflect magic to defend against these shots.

Trivia

 * The "Ān" in this monster's name is Japanese onomatopoeia meaning to open one's mouth wide.
 * Octoroks do not appear in the Palaces, while Aneru appear solely within them.
 * Aneru have some resemblance to Piranha Plants.