A pet medical checkup device of the present disclosure includes a shooting section that shoots a moving image of a pet, a first storage section that stores the moving image of the pet shot by the shooting section, a first database that stores motion information representing a specific motion made by the pet when the pet has a disease for each disease of the pet, a first determination section that determines whether or not the pet is making the specific motion represented by the motion information stored in the first database using the moving image of the pet stored in the first storage section, and an estimation section that estimates the disease of the pet based on a determination result of the first determination section.