The WWF report shows that biological species are dying out faster than ever  There are currently 13,000 rhinos in Africa, and the number of such behemoths once reached 1 million on this continent  In Africa, The number of hippos has dropped by 95%, and there are only 1,300 hippos now, and 30 years ago, the number of this pachyderm reached 29,000
At least 800 hippos' teeth and meat are traded in Africa every year
Human activities are the main reason for the sharp decline in the number of horses.