While dogs possess a series of natural facial expressions that trace back to their ancient wolf ancestors, they're also ...

If a mouse is in a lot of pain, an experienced handler may see it in the animal’s facial expression—its narrowed eyes and bulging cheeks. But, subtler facial expressions may be more difficult to match ...

Pandas have different facial expressions based on the personality they have and each of them also makes unique sounds in the game. This idea of different pandas with different facial expressions ...