A piglet on the west side of Dryford village has a generic bark string.  Only one of the two piglets here can be "spoken" to by left clicking on it, and when you speak to it, it says "I'm a bark string! Bark bark bark bark bark".  It also says this randomly on its own as it wanders around the pen.

 

This is a known issue, and we are working on it

 

Thanks for post