[Acrylic-bob]

Ok if we are gonna talk dog poo, lets have a look at one of the more interesting things that might be in it. Toxocara Canis, a form of nematode roundworm, propagates itself via eggs secreted in dog poo. The eggs can survive in harsh conditions like grass and playgrounds for a very long time - years! Once the parasite finds a new host the eggs hatch into larvae and can cause flu-like symptoms, sight impairment and occaisional blindness in humans, particularly children.

Here is a picture of an encapsulated larvae in the retina of someone's eye.

A really good reason to exercise your dog away from areas used by children and clean up after it. Cats can get it too, though they usually get a different form.