Peacock spiders are diurnal cursorial hunters feeding primarily on insects and other spiders. In habits, the animal was cursorial and herbivorous, or possibly carnivorous. This genus is considered to have been carnivorous and cursorial. This hypercarnivorous and highly cursorial genus is distinguished by accessory cusps on the premolars. There were long-legged, cursorial forms adapted for running and squat, semi aquatic forms. Each thoracic segment gives rise to a pair of walking appendages (known as cursorial legs). Its elongate tibia has been strongly correlated with cursorial habits. It appears to have many adaptations towards a cursorial (running) lifestyle. Compared to the hog deer, the chital has a more cursorial build. Though incomplete, these fossils indicate forms larger but less cursorial than the modern cheetah. There is much debate over how to define a cursorial animal specifically. Some are considered to have had cursorial habits. Bonaparte explained it as an adaptation for a cursorial (running) lifestyle. This makes it a specialized type of cursorial ("from the ground up") theory. Acinonychinae due to their anatomical specializations for their cursorial nature.