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Saturday, March 11, 2017

5 Animals With Pockets


Animals (including us humans) are ingenious in a zillion unique ways. Here are five animals that come with built-in pockets.

1. Male Seahorse
Photo by romainguy/Flickr
Before seahorses breed they go on a multi-day date, during which they hold tails and swim and dance together. When the time is right, the female seahorse uses her ovipositor to squirt eggs into the male seahorse’s ventral “brood pouch.” The male is pregnant for 10 to 25 days until strong contractions allow him to release the fully formed fry. Directly after giving birth, this superdad is ready to onboard another set of eggs.

2. Marsupials
 
Photo by Jen M./Flickr
As you already know, marsupials — which include kangaroos, koalas, wombats and possums — have pouches called “marsupiums” for keeping their young protected and nourished. These built-in pockets are marvels of engineering. For example, koalas, who can’t reach into their back-facing marsupiums to clean them, have self-cleaning pouches. Right before the koala gives birth, she secretes an antimicrobial liquid in her pouch to prepare it for the arrival of the vulnerable, gummy-bear-like baby. BTW the pouch is the least weird aspect of marsupial reproduction; most marsupials have double-headed penises and triple vaginas.

3. Echidna
Photo by Laurence Barnes/Flickr
Echidnas (pronounced eh-KID-nehs), also called spiny anteaters, have spines and long, incredibly sensitive snouts. They live exclusively in Australia and New Guinea. Like platypuses, echidnas are monotremes: outside-the-box mammals that lay eggs instead of giving birth to live young. Echidnas have a temporary, “convertible” pouch for carrying their eggs and young. This pouch is formed by abdominal muscles contracting to create a pouch-like holder. When the female echidna lays an egg, she lies on her back, rolls the leathery egg down her stomach, and tucks it into her pouch. After about 10 days the baby hatches. The young echnidna, delightfully named a “puggle,” hangs out in the pouch until it begins to develop its spines, at which point it’s evicted by the mother for being too prickly.

4. Sea Otter
 
Photo by pling/Flickr
Yup, sea otters have pockets. Folds of loose skin across their chests create a pouch under each forearm to store stuff in. Sea otters often have a favorite rock for cracking open shellfish and clams, and they keep this rock in one of their pockets — typically, according to science, the left pocket. Sea otters also use their pockets to store food gathered on dives. (I know. As if sea otters weren’t already unbearably cute.)

5. Chipmunk

Many animals, including rodents, monkeys and platypuses, have cheek pouches for storing food. But of all Earth’s animals, chipmunks have the largest face pockets. When a chipmunk’s cheek pouches are full, they can reach the size of the whole rest of the chipmunk’s body.

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