>>2120718
Muscle tissue

>>2120731

Why is it there though? And it's covered by thick flaps of skin as well, isn't it?

>>2120748
buccinators muscle and some other I can't remember right of hand.

they're there to move the lips and cheeks for eating and communicating.

snarl muscles

>>2120748
Basically what >>2120749 said.

Also, look up muscular system of a dog or even a human. We basically have muscle tissue everywhere in our body, it's what makes our bones move!

>>2120796

>We basically have muscle tissue everywhere in our body, it's what makes our bones move!

Wowee, asshole, you sure enlightened me. I was asking about it because of the volume.

>>2121015
The human buccinator is relatively wide and thin. I'd imagine a dog's is as well