8 reasons animals are disappointed in the human race

1. Biodiversity in the world is smaller than ever. From 1970 to 2010, the number of mammals, birds, reptiles, amphibians and fish fell 52 percent, according to World Wildlife Fund (WWF) data.

2. The waters where water sports will be held at the 2016 Olympic and Paralympic Games in Rio de Janeiro are high in viruses and bacteria, the Associated Press reported.

3. Between 1990 and 2010, the annual rate of deforestation increased by 62% over the previous decade. Researchers at the University of Maryland in the United States indicate that rainforests are rapidly disappearing.

4. According to US universities Stanford, Princeton and Berkeley, vertebrates are disappearing 114 times faster than normal, causing Earth to enter a new period of mass extinction.

5. This same survey shows that 41% of amphibians and 25% of mammals are currently at risk of extinction.

6. The amount of waste is expected to rise from 1.3 billion tons to 2.2 billion tons in 10 years, according to an estimate by the United Nations Environment Program.

7. Each year, glaciers melt 50 cm to 1 meter, affecting thousands of others around the world.

8. 38 million animals are illegally removed from the wild each year, according to data from the National Network to Combat Wildlife Trafficking.