Pouches, pockets and sacs in the heads, necks and chests of mammals, part V: palatal (and other) pouches in camels and gazelles
Everybody knows that camels are weird. As you'll know if you've been keeping an eye on SV-POW! lately, we've recently been quite taken with their necks. But it's not just camel's necks that are weird. Here, we embark on another look at the sometimes bizarre pouches, pockets and sacs present in certain mammals, most of which are outgrowths of the respiratory system.
Source: scienceblogs.com