With their large, child-like eyes and raised eyebrows, it can be difficult to say no to your dog when they give you the 'puppy-dog eyes'.
Now, a new study has revealed the precise anatomical features that could explain what makes dogs' faces so appealing.
Researchers from Duquesne University in Pittsburgh found that dogs have similar muscles in their faces to humans, allowing them to form facial expressions close to our own.
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