Condoms were originally made of animal intestines or linen.
347
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
The cat brain weighs about 30g.
167
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
A lion in the wild usually makes no more than twenty kills a year.
186
A 42-foot sperm whale has about 7 tons of oil in it.
209
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
The most expensive cow in the world was sold in 2009 for $1.2 million.
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