We've already had a two headed calf on this site, but you can never have too many two headed animals.
There have been 233 visitors to this weird eBay listing so far. It started at $0.99 and is up to $510.00 with ten bids.
Update: There were a total of 16 bids with the top bid being $760.00. Unfortunately, the reserve (minimum the seller is willing to accept) on this listing was not met.
It has been relisted here:
Second Update: The second listing wound up selling for $700.