The most expensive cow in the world was sold in 2009 for $1.2 million.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
One in three dog owners say they have talked to their pets on the phone.
427
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16