Just a question.
I Have a welsh x riding pony, She is only 6 years old.
I've had her for 2 months and have never noticed this before,
She has large parts to her mussel on the sides? They are quite larger than
Usual? I was thinking it may be her teeth lumps but im unsure.
Photos are here:


(The photo's aren't so good, but the things im talking about are along
Her mouth line towards her eyes)
She also is trembling her mouth a lot/Twitching with her ears down
To the sides looking generally not happy.
Would anyone know why?