Jumping Piranha Plant

The Jumping Piranha Plant (P-Pakkun in Japan) is a type of Piranha Plant that is not rooted to the ground.

Super Mario World
Jumping Piranha Plants made their debut in Super Mario World as the most frequent Piranha Plant enemies in the game. They wait in their pipes for prey to approach and then jump high out of the pipe or bushes. In case they miss the prey, they slowly lower, so as to catch the prey on the retaliation. In some cases, they also spit two fireballs, which may shows the relation to the Venus Fire Trap from Super Mario Bros. 3.

Upon the magic of the Special World being released onto Dinosaur Land, Jumping Piranha Plants turn into Jumping Pumpkin Plants. In other words, their buds are sealed by a Jack-o-Lantern. Other than that, they pose no more threat than a Jumping Piranha Plant.

Super Mario Advance 4: Super Mario Bros. 3
Jumping Piranha Plants return in Super Mario Advance 4: Super Mario Bros. 3, the GBA remake of Super Mario Bros. 3 (which is the prequel Super Mario World). They only appear in World-e's e-Reader accessible level, Dig! Dig! Dig Through!!. The Jumping Piranha Plants behave exactly similar to that of Super Mario World, though their appearance is pretty much identical to Super Mario Bros. 3 's original Piranha Plant species, save for their propeller-like leaf.

Trivia

 * Jumping Piranha Plants appear only in Super Mario World, although the Super Mario World 2: Yoshi's Island enemy Hootie the Blue Fish bears resemblance to them. Piranha Pests from Yoshi's Story also share a resemblance to it.