1) A lion’s roar can be heard from five miles away.

2) The world’s biggest species of frog, the goliath frog of South America, can grow up to a foot in length and weigh as much as a domestic cat.

3) Archeological evidence suggests humans have kept dogs as pets for more than 30,000 years.

4) There are 40,000 muscles in an elephant’s trunk.

5) There is only one species of monkey in Europe, and they all live in Gibraltar.

6) An average adult wolf can eat as much as 20 pounds of food in a single sitting. An adult tiger can eat four times that much.