Exposing a developing female sheep fetus to low doses of chemicals commonly
present in the environment can disturb the development of the ovary
Over recent decades there has been a dramatic increase in the production of
industrial and agricultural chemicals and heavy metals, and this has
coincided with widespread reports of breeding problems in wild animals.
Fertility also appears to be declining among humans and there has also been
a rise in reproductive defects observed in newborn babies.
http://news.yahoo.com/s/nm/20070706/india_nm/india283267;_ylt=AvxxpotYGbPe2uvhbwqLqKQPLBIF
Sexual problems could lead to rhinos' extinction
Low sperm counts and other reproductive problems are preventing pregnancy among Malaysia's endangered rhinos, a worrying trend that wildlife experts say could hasten the animals' extinction.
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