Scientists in Hamburg, Germany, are baffled by the strange deaths of hundreds of toads after they apparently exploded in and around a pond, according to a Local 6 News report. As many as 1,000 toads have died after their bodies swelled to bursting point and then exploded, according to reports from animal welfare workers and veterinarians.The area around the pond in Hamburg has been cordoned off as experts investigate the dead toads. Scientists are looking at a fungus that may have been spread by foreign race horses from a nearby track, Local 6 News reported Sunday.