a birthstone , an animal
Symbolism is when something represents something. For example a candle could represent hope or a dove could represent peace etc.
Something to eat.
There are a great many things in the world that could serve to represent Australia. You could use the koala for example.
If someone feels like there is hair in their mouth, they may have something on their tongue. There could also be a hair from their head in the mouth.
An eye could represent seeing something. Eyes in tattoos often represent power or the ability to envision certain outcomes in life.
They're simply there for decoration. Or they could represent something.
It was something he was born with there is no specific reason why his mouth is that way.
He might have an infection in his mouth or something caught around his tongue, he could have woody tongue.
I think you could scare it follow it or, you could throw something at it. I hope my answer is useful.
1.4 millimeters or something like that
Maybe if you were eating something that could be sharp like a pretzel? If you have braces and your mouth gets caught? If you have sharp edges on your teeth?
I highly recommend you take your dog in to be checked out by your Veterinarian. There could be something wrong with his mouth, jaw, teeth, etc. He could be in lots of pain.