Which highly intelligent animal is known for its ability to remember and distinguish among many human faces by testing with masks?

The highly intelligent animals recognized for their exceptional memory skills and ability to distinguish among numerous human faces are crows. Research has shown that crows can recognize individual human faces and can associate them with specific actions or threats, often reacting differently depending on their past experiences with those individuals. This cognitive ability is remarkable and illustrates their advanced social intelligence. Through tests that involve the use of masks, crows demonstrate their capacity to remember and differentiate between various human faces, indicating a sophisticated level of learning and memory. This capability is a hallmark of their adaptability and intelligence in navigating complex environments.