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.
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The seahorse is the only fish to have a neck.
12
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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