There is every reason to think that this effect will also happen to ferrets and other four footed mammalian family members. <http://www.wharfedaleobserver.co.uk/news/9917728.Warning_issued_for_toxic_algae_discovery/> The article begins: "People have been warned to beware after the discovery of potentially harmful algae in Yeadon Tarn. The presence of the blue-green algae species Anabaena has been confirmed by the Environment Agency. The tiny organisms are capable of producing toxic neurotoxins, which can harm anyone coming into contact with them." Some forms of blue-green "algae" also produce carcinogenic substances. Blue-green "algae" is more correctly called Cyanobacter because it is closer to bacteria than it is to algae. Sukie (not a vet) Ferrets make the world a game. Recommended ferret health links: http://pets.groups.yahoo.com/group/ferrethealth/ http://ferrethealth.org/archive/ http://www.miamiferret.org/ http://www.ferrethealth.msu.edu/ http://www.ferretcongress.org/ http://www.trifl.org/index.shtml http://homepage.mac.com/sukie/sukiesferretlinks.html all ferret topics: http://listserv.ferretmailinglist.org/archives/ferret-search.html "All hail the procrastinators for they shall rule the world tomorrow." (2010, Steve Crandall) A nation is as free as the least within it. [Posted in FML 7549]