There are musk glands in these little pockets. Many time you will see them evert when the animal is excited/stressed. Nothing to worry about.
:On the lower jaw of a gator or caimen is it commom for the them to have soft spots on either side of the lower jaw, its right at the end before the jaw hinge? its like a little pocket under the skin? I have ever really even noticed it before! Does any one know what they are or is it normal? Thank you someone please ease my mind