A pug's adorable wrinkles and big bug eyes don't just make it look cute.

It's easy to see why people love pugs. They're social, quirky and intensely loyal — making these squish-faces a popular dog breed. But pugs have more going for them than comical cuteness.

Cram your brain with 16 facts that prove pugs deserve the designation of the best dogs on the planet, paws down.

Pug Facts

1. 1.

   Image: The Pug Father

2. 2.

   Image: Flickr, Jordi Payà

3. 3.

   Image: Flickr, Dippy Daloo

4. 4.

   Image: Flickr, heep14

5. 5.

   Image: Henry Alva

6. 6.

   Image: Kristin Shoemaker

7. 7.

   Image: Jon Clegg

8. 8.

   Image: Rick Harris

9. 9.

   Image: Flickr, nikoretro

10. 10.

    Image: Flickr, stuad70

11. 11.

    Image: Flickr, Natasha d.H

12. 12.

    Image: Flickr, knight725

13. 13.

    Image: Ackermann Photography

14. 14.

    Image: Jesse Draper

15. 15.

    Image: Flickr, emmathepug

16. 16.

    Image: Flickr, Patrick Cuda