
1) Animal anatomy 2) Mammal disease
Found on
https://www.crosswordclues.com/clue/guttural-pouch

In the equids (horses) and some species such as the desert hyrax, the guttural pouch is a pair of air chambers in the neck just behind the skull and below the ears. These pouches are on both sides of the head and are an air-filled out-pouching or evagination to the Eustachian tube, leading into the trachea. While the location of the pouches is gen...
Found on
http://en.wikipedia.org/wiki/Guttural_pouch

A structure in the horse which is a diverticulum of the auditory (eustachian) tube; subject to chronic infections and inflammation and frequently necessitating surgery for relief. ... Hartmann's pouch, a spheroid or conical pouch at the junction of the neck of the gallbladder and the cystic duct. ... Synonym: ampulla of gallbladder, fossa provesica...
Found on
http://www.encyclo.co.uk/local/20973

In horses, an internal sac that represents an outgrowth of the eustachian tube, the short canal that connects the middle ear with the back of the throat and that acts to equalize pressure within the ear.
Found on
http://www.thehorse.com/Glossary.xhtml?L=G
No exact match found.