9. Border Collie
The Border Collie is a breed that constantly looks like it’s smiling, hence the 17,499,859 Instagram posts under #BorderCollie. While Border Collies can be subject to a plethora of illnesses and genetic disorders, according to PetMD, the most common of them all is hip dysplasia, which is a condition that sees the ball and socket of the hip joint improperly fitting together.
