What is this dried animal for sale?
The boy is holding a couple of smoked/barbecued cane rats, also known as "grasscutters".  These are commonly hunted as bushmeat in West and Central Africa and have recently been farmed as well.

You can see some similar photos here:


http://members.virtualtourist.com/m/p/m/178963/
http://westafricaadventure.blogspot.com/2011_04_03_archive.html
http://www.fionaleonard.net/2012/04/rodents-of-unusual-size.html
http://2summers.net/2015/01/23/pop-up-travel-cane-rats-in-ghana/