These 30 cute animals that look like they're smiling are bound to warm even the stone-cold jaded hearts among us.
Not so fast, however – the scientific jury is still out on whether or not animals can actually share a pretty smile with us. It's perfectly reasonable to expect that the smiling animals that we see are a case of pareidolia – our tendency to see human faces in everything around us. And many of the adorable animals have different complex visual cues to express their emotions that may preclude the need for smiling. Dogs already communicate with each other by raising their haunches, baring their teeth, changing their postures and raising, lowering or wagging their tails so it would be reasonable to expect that smiles just aren't a part of our happy pets' already sophisticated physical vocabulary.
However, scientists are increasingly warming up to the idea that animals may have a more complex range of emotions and that some of them may even have facial expressions similar to ours. In 2010, a controversial experiment held at McGill University determined that mice have distinct facial expressions to express pain, which can be used to monitor their discomfort during a given experiment.
No matter, though, if these happy animals are truly smiling or just grinning, they sure do look absolutely adorable!
Source: globalanimal.org
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Image credits: Andrea Zampatti
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Image credits: Maureen Ravelo
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