Five happiest animals in the world 

Here are five animals who are deemed the 'happiest' because of their cheerful behaviour and playful appearance. 

1. Quokka: Quokka is known as the 'happiest' animal in the world due to its cheerful appearance and permanent smile on its face. 

2. Dolphins: Dolphins are known for being social, playful and intelligent. 

3. Sun bears: Sun bears often display joyous behaviours such as playing or climbing trees. 

4. Blue bird: Blue birds are associated with happiness, joy and harmony. 

5. Kookaburra: Kookaburra, or laughing Kookaburra birds are known for their distinctive call, which sounds like laughter. 

This information is not DNA's opinion but obtained from media reports