Although their knowledge base is similar, occupational therapists typically focus on fine motor skills (i.e. grasping, handwriting), visual-motor skills, oral motor abilities (i.e. food refusal, food selectivity, oral motor dysfunction) and sensory integration. Physical therapists are specialized in gross motor skills (i.e. rolling, sitting, crawling, walking, jumping), functional mobility skills, postural alignment (including the legs and feet), and gait (walking).