Gular glands in crocodiles are one thing, but many are also not aware of the facial and movable glands in muntjacs.
These structures aren't really sexy so they are often omitted from documentaries. Here a video of them in action that made it's rounds some time ago.
Muntjacs also known as barking deer or rib-faced deer, are small deer of the genus Muntiacus native to South Asia and Southeast Asia. Muntja
Utterly bizarre when you are not familiar with them. It often makes me wonder what kind of glands we might miss in paleoart. Uropygial glands in birds for example, when did they evolve? Did non-avian dinosaurs already have then or did they use another, analogous structure during preening?
Another example are enlarged skin glands like the poison glands in many amphibians. Could temnospondyls already have something like this?
Just remembered, duikers are a good example of large preorbital glands as well, often appearing as prominent slits and pouches in front of the eyes. Some oreodonts like Eporeodon might had have similar structures.
You know Cbum is not only the nickname of the Canadian bodybuilder Chris Adam Bumstead .
Sebum is also an oily substance that protects your skin from drying out. The difference between this is the spelling Cbum the bodybuilder / Sebum the oily substance for locking moisture in our skin.