Needlenose are a subspecies of a Pokey,coming in green or yellow, that first appeared in Super Mario World 2: Yoshi's Island. Needlenoses later reappear in Yoshi Touch & Go and Yoshi's Island DS where their personalities still remain the same. They appear to be small round shaped cacti with spikes in them. When yellow Needlenoses are heaved at Yoshi, they instantly pop.
The green Needlenoses are different as they can be spat from Blow Hards and Wild Ptooie Piranhas and don't pop when they hit Yoshi. These enemies are mainly found on cacti. When Yoshi swallows a Needlenose, the Cactus frowns and shortly reproduces another one.
They also have a similar sub-species called Cactus Jack.