The elephant brain weighs about 6,000g.
274
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
Cats and dogs can hear ultrasound.
350