Kitty and Piggy on Flickr – Photo Sharing!. i guess this is piggie in the middle?
Guinea pig:
The guinea pig (also commonly called the Cavy after its scientific name, Cavia porcellus) is a species of rodent belonging to the family Caviidae and the genus Cavia.Cavy party:
A bunch of guinea pigs just having fun (with or without hats).
cavyparty at gmail dot com