Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Sharks, like other fish, have their reproductive organs in their chests.
248
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12