First of all, I'd like to make it clear that the idog is not an MP3 player. It's simply a speaker system that can be used with any audio source type. All you need is an audio source via mini plug and you can use the idog as a monitor (speaker system) for your tunes.
My daughter is an animal lover and has a special place in her heart for dogs. Her grandfather bought her the idog for Christmas, not knowing that it was only a speaker system. We added an MP3 player and she was able to enjoy the idog.
The idog not only amplifies audio, it has colorful lights and dances. In fact, it dances according to the speed and style of music you're playing through it. It will do a hip hop swagger when appropriate or just rock its head back and forth to a swing tune. It's quite a cute little invention. My daughter really enjoys it - not only as an audio gizmo, but as a little buddy as well.