Motile Vegetable is a broad term describing any of numerous different plant species able to move quickly under their own power to escape predation or seek a more suitable environment.
Motility was a frequent adaptation in plants on Equus, especially those with nutrient-rich tubers or other resource caches to defend. It was so common that plant motility probably influenced the evolution of little ponies.
Megaflora were among the most important of motile vegetables to ancient ponies, forming the basis of the diet for many groups. As a result, expert hunting overtaxed many large motile vegetable populations; most were hunted to extinction by the end of the ancient lithic period.
Smaller motile vegetables persisted until around the end of the classical period. These eventually went extinct primarily due to habitat loss to pony agriculture and a lack of predation pressure giving more advantages to their much more energy-efficient non-motile relatives or cultivars. A notable exception was the Hayminnow, which persisted in great shoals in the seas of Equus and was a commercially important wild crop right up until the Catastrophe's falling sea levels caused it to go extinct.