This study investigated the effect of biomimetic feeding behavior on the perception of lifelikeness in robots. A robot designed to simulate the feeding behavior of the emperor penguin was developed. It features a 3D-printed beak, movable wings, and a furry exterior, which allows for safe tactile interaction. Participants interacted with the robot in two conditions: with and without feeding. The results indicate that feeding may enhance the lifelikeness and perceived intelligence of the robot. This outcome suggests the potential for interaction through feeding to facilitate a deeper connection between humans and robots, which will be useful for designing more lifelike robots in the future.