Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Cats and dogs can hear ultrasound.
350
Dogs sometimes fake being sick to get attention.
26
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
A cow produces around 200,000 glasses of milk in her lifetime.
373
Lobsters have blue blood.
476
Alligators can live up to 100 years.
337
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