Sheep, goats, octopuses, and toads have rectangular pupils.
7
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
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
The most expensive cow in the world was sold in 2009 for $1.2 million.
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