12．There are world records at the Olympic Games．But what are the world records in the animal kingdom？
The largest and heaviest animal on earth is the blue whale．It weighs between 110and 120tons．Its heart is the size of a Mini Cooper，It's got the biggest mouth in the world as well．About 100people can fit inside it．But it doesn't eat people!In fact，the biggest thing it can eat is the size of an apple．
The giraffe is smaller than the blue whale but it is also a record breaker．It's the tallest living land animal．It's got the longest neck-about 2metres long，and it's got the longest legs-about 1.8metres long．Drinking is difficult，but eating from the top of trees is easy!And its tongue is 50cm long!
The most dangerous animal in the world isn't a lion or a bear．It，s an insect!The mosquit-oes （蚊子） that carry malaria kill over 1million people a year．After that，the most dangerous animal is the venomous snake．They kill 50，000to 125，000people a year．
46．C47．B48．A
A．the mosquito
B．the giraffe
C．the blue whale
49．weight50．over1million．
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