DDT became a prime target of the growing anti-chemical and anti-pesticide movements, and in 1967 a group of scientists and lawyers founded the Environmental Defense Fund (EDF) with the specific goal of enacting a ban on DDT. Victor Yannacone , Charles Wurster, Art Cooley and others in the group had all witnessed bird kills or declines in bird populations and suspected that DDT was the cause. In their campaign against the chemical, EDF petitioned the government for a ban and filed lawsuits.  Around this time, toxicologist David Peakall was measuring DDE levels in the eggs of peregrine falcons and California condors and finding that increased levels corresponded with thinner shells. [ citation needed ]
In East Asia , most countries excluding Vietnam , North and South Korea rarely consume dog meat either because of Islamic or Buddhist values or animal rights as in the Philippines. Manchus have a prohibition against the eating of dog meat, which is sometimes consumed by the Manchus' neighboring Northeastern Asian peoples. The Manchus also avoid the wearing of hats made of dog's fur. In addition to Manchus, Chinese Mongol , Miao , Muslims , Tibetan , Yao and Yi have a taboo against dog meat.  In Indonesia , due to its majority Islamic population, consuming dog meat is prohibited, with exception of Christian Batak and Minahasan ethnic groups that traditionally consumed dog meat.