The zoo is actively working on the processing of pine trees, which are brought to us almost daily by city services. Unsold trees are given to animals as a mineral and vitamin supplement in the diet, and from the used pine trees that are processing on special equipment excellent wood chips are obtained. The chips are used as a substrate in the enclosures, for decoration of pedestrian paths, lawns, saturating the air around with useful phytoncides. For the entire period after the New Year more than 1,500 trees were delivered to the zoo, for which we thank everyone for their help.