Did you know that amoebas can live as parasites in animal cells? http://www.scienceclarified.com/Al-As/Amoeba.html
Did you know that some amoebas are "brain eaters"? http://www.webmd.com/brain/brain-eating-amoeba
Do you know how to get rid of them? http://www.parasitecleanse.com/amoeba.htm