Scientists find that Proboscis monkeys regurgitate their food just like bovine.

The nose of a male proboscis monkey can exceed 3.9 inches (10 centimeters), and is thought to woo females.
   The first monkey that acts like a cow has been discovered - one that regurgitates to give its food another go, just as many cattle species do.

   Cows, goats, sheep and other ruminants masticate vegetation, let their meals soften in their stomachs, and then throw up the larger chunks into their mouths to chomp on this cud some more. This re-chewing helps them break down cellulose (which is abundant in green plants) and extract more nutrients from it.
   Investigators used video cameras and binoculars to monitor about 200 proboscis monkeys, which lived off fruit and leaves along a tributary of the Kinabatangan River in Malaysia. The researchers saw 23 monkeys chew their regurgitated food at least once. The monkeys apparently suck in their abdomens and stick out their tongues before they regurgitate, keeping all the cud in their mouths.

   The scientists continuously observed one adult male for 169 days and watched him chew his cud for 11 days. This rumination usually happened when he spent more time eating, suggesting that regurgitation helps the monkeys deal with more food and possibly helped them eat more.
   The scientists detailed their findings online March 30 in the journal Biology Letters.

Also, here are some more pictures of this funny creature:


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