Although toxicosis has occurred in Australia, Papua New Guinea, Africa and Florida, it has not been recorded in any other tropical and subtropical regions. Goats in Burma lost hair when fed a diet containing 50% of "Leucaena". Goats and cattle in Hawaii are able to degrade the 3,4-DHP ruminally. Tolerance might be related to the presence or absence of microbes tolerant to mimosine and 3,4-DHP. It is known that at least Australian goats do not share the abilities of their Hawaiian counterparts.