Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
15
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1