Guinea Pigs are entertaining animals who speak with funny squeaks and whistles. I used to have several and when I came home from work, would be greeted with a chorus of "Wheek!Wheek! Wheek!" all demanding food of course. They are a favored food source in the Andes. Peruvian restaturants are getting popular in the USA - I wonder if they serve guinea pig? I'd try it if it was on a menu. The babies are born with teeth, fur and their eyes fully open, they can eat adult food almost immediately. There is nothing cuter! http://en.wikipedia.org/wiki/File:Guinea_baby_1.jpg
This little fellow was very mellow!