one of the last iDogs released, Hasbro released the iDog Plush Puppy. This smaller plush iDog came in pink and purple and was one of the first iDogs that didn't need batteries. It came with a cord attached to it, like the iDog Clip. But it had the light patterns stitched onto it. As part of a promotion with McDonald's in Japan, sets of iDog-based toys were included in Happy Meals in 2007. In 2007 and 2008, Burger King had a promotion which included miniature models with stickers representing the dots. Personalities Different kinds of music cause iDog to develop different personalities, as displayed through the color of LED lights that flash and blink on its face. iCat The iCat is a feline version of the iDog. Similar to the iDog, it reacts to music from an external source, such as an MP3 player. It features seven flashing LED lights on its face and has the ability to "dance" to the beat of the music. It also has switches on its tail, head (nose), and 7 touch sensors which allow it to react to user input. Like the iDog, its LED light color patterns display various "emotions" based on user interaction and the music played. iFish A piscine version of the iDog, the iFish plays music and moves in a swimming-like motion. The iFish also has an internal selection of music. The iFish comes with a blue or orange tail fin, with a 3.5 mm audio cable for audio input. Like the iDog, it is touch-sensitive. iCy The iCy, marketed as the iPenguin in select countries, is a penguin version of the iDog. In addition to playing music, it dances and the LED lights on its stomach flash in time to the music. Unlike its predecessors, it has only two touch sensors for user interaction: its tail, which is designed to annoy it rather than reward it, and its beak, which is used to pet it. It has various "emotions" which change based on user interaction and music played. iTurtle The iTurtle is a turtle version of the iDog. It also comes with a plug cable (3.5 mm) with 2 touch sensors on its tail and head. It moves its shell up and down, shakes its head side to side, and taps its foot. Has the same things as others except his moods are modified. Viral marketing In 2006, UK