Nonprofits and government agencies trying to end open defecation historically have parachuted into villages armed with health statistics , subsidies and latrines .
It is highly probable that dinosaurs had a cloaca-as do most birds and reptiles-which is a single opening for urination , defecation , and reproduction .
After all , what arguments for toilets could be more persuasive than hygiene and health ? The numbers alone would seem capable of convincing any adult mind that open defecation is disastrous .
