Answered several long years later.
Logic.

They do make the ring ding noises in real life though, they make high pitched noises :P

i agree, i heard that song once and was fed up with it half way through.

My thoughts exactly. You know, a weird coincidence, a few days before that stupid thing came out - or at least I think a month before I heard about it, which was a while after it came out - I watched a video on youtube where some woman had a pet fennec fox which was VERY noisy. Actually it was intolerable, screeching like the end of the world was upon us, running around like it was on some kind of mixture of caffeine and heroin and cocaine, and I left a comment that was on the line of "well, now we know what one of those kids toys should say that says things like "the cow says..... mooo!" should say if a fox is ever added. It should say "the fox says SSSCCREEEEE! SCREEEEE!!! SSSCCREEEEEEEEE!!!! SCREEEEEE!!!" or something like that." I guess I shouldn't have left that comment. Kind of like how someone says in a movie "well, we're safe now", or "how could things possibly get any worse?"

I love it :>
Mainly because I can't stand Ylvis and their annoying song. They shall not ruin my image of a fox anymore :/