lenda

When was the last time you thought about how many animals there are in the world? After learning this, you will be amazed and you will be filled with wonder. There are about 20 quintals of animals on the planet. Put it another way, it's about 20 trillion creatures. Cockroaches and other small insects are estimated to be involved in this total. The cow, on the other hand, is one of the most famous creatures in the world . More than one and a half billion cows are being reared daily and this number is only increasing. There are billions of rats on the planet as a whole. Scientists can also do research on mice, which is an interesting topic. In the United States, approximately 100 million animals are tested annually. Laboratories that employ rats and other small animals are exempt from the most basic concerns of the Animal Welfare Act, which is surprising because these animals are commonly used in scientific research (AWA). In addition, up to 90% of the animals used in U.S. labs for t...