A joyful event occurred in the Berlin Zoo, writes the RIA news portal. The white bear Tonya gave birth to a baby. The bear cub is constantly in the hands of the mother, its dimensions do not exceed 30 centimeters. Visitors will be able to watch the family only in the spring, because now the animals have laid down in the den for the winter. However, on the Internet there is a video from surveillance cameras installed in aviaries where you can spy on the baby. The breeding of animals in captivity is always an important and significant event, which indicates the well-being of animals and their adaptation to the conditions of detention.