Top 10 Animals with a Throat Pouch (Gular Pouch)

Sometimes the gular skin forms a flap, or gular pouch (aka throat pouch/sac, gular sac, vocal sac or gular fold). Gular skin (throat skin) is an area of the skin on the throat that has specific functions (on birds the skin is featherless).

Usually the throat pouch has one of these 3 purposes:
1) to store fish and other prey while hunting
2) some male animals just inflate it to attract mates during the breeding season
3) some animals use the pouch for vocalization (vocal sac) - to communicate, scare off rivals, to proclaim territory or dominance, and to locate and attract a mate. Vocal sacs amplify the sounds.
The Top Ten
1 Pelican

Its pouch probably has the capacity of a shopping cart!
The guy in the image just put a fish in it. Its pouch is expandable and can get bigger.

2 Frigate Bird

Males have a red gular pouch that they inflate into a huge red balloon by forcing air into the sac that can last for over 20 minutes. They do this during the breeding season to attract females, during courtship display.

3 Grey Crowned Crane

It has a bright red inflatable throat pouch.

4 Frog Frogs are a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura.

Some of them have a vocal sac. The vocal sac is the flexible membrane of skin possessed by most male frogs.
Frog species without vocal sacs can only be heard within a radius of a few meters, whereas some species with vocal sacs can be heard over 1 km (0.62 mi) away.

5 Sage Grouse

It's a bird found in the North-central and Western United States, and the Canadian provinces of Alberta and Saskatchewan.
The male sage grouse has two gular sacs that it inflates to attract mates.

6 Orangutan Orangutans are great apes native to the rainforests of Indonesia and Malaysia. They are now found only in parts of Borneo and Sumatra, but during the Pleistocene they ranged throughout Southeast Asia and South China. Classified in the genus Pongo, orangutans were originally considered to be one species. From 1996, they were divided into two species: the Bornean orangutan (P. pygmaeus, with three subspecies) and the Sumatran orangutan (P. abelii). A third species, the Tapanuli orangutan (P. tapanuliensis), was identified definitively in 2017. The orangutans are the only surviving species of the subfamily Ponginae, which diverged genetically from the other hominids (gorillas, chimpanzees, and ...read more.

Orangutans have inflatable sacs

7 Walrus The walrus is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere.

The walrus has an air sac under its throat which acts like a floatation bubble.

8 Green Anole

It's a lizard with an extended retractable gular fold

9 American Toad

In the image it's with the vocal sac inflated

10 Cormorant
The Contenders
11 Marabou Stork The marabou stork (Leptoptilos crumenifer) is a large wading bird in the stork family Ciconiidae native to sub-Saharan Africa. It breeds in both wet and arid habitats, often near human habitation, especially landfill sites. It is sometimes called the "undertaker bird" due to its shape from behind: cloak-like wings and back, skinny white legs, and sometimes a large white mass of "hair"
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