After studying otter organs recently, researchers have issued warnings suggesting men's willies at a danger of shrinking.

In their conclusions from the study, researchers are claiming to have noticed shrinkage in the reproduction abilities of river creatures, which they fear could exist as a big problem in humans too.

Experts are blaming modern chemicals or chemically polluted waterways for this dramatic effect on the river creatures' ability to reproduce.

These are some of the most shocking discoveries that have been made recently by researchers.

Experts from the Cardiff University Otter Project and the Chemicals, Health and Environment Monitoring Trust ran a study over otter populations in England and Wales. After thoroughly analysing the population, they noticed a reduction in the weight of their penises along with noticing an increase in their un-descended testicles and cysts on sperm-carrying tubes too.

Experts fear for fellas because the above changes have already been reported in humans.

Trust director Mr. Gwynne Lyons, said: "In reality humans and wildlife are exposed to a cocktail of many chemicals every day and some may be adding up to cause problems."

The above discoveries have marked a serious threat to the survival of otters in the UK.

Experts are planning to measure the EDCs (Endocrine Disrupting Chemicals) present in the otters and their habitat to conclude the links.