It is an annual tradition that is clearly in the taste.
Read also On safari in the christmas tree: 25.000 insects and other animals, enjoy holidays, in your living room The elephants were terrified, full of trees decorated with peppers and other goodies inside, the monkeys get trees decorated with fruit and the tigers can deal with instances in which tasty vleessnacks hiding. the
The zoo gives the animals only unsold trees of kerstboomverkopers and plantencentra. The christmas trees in the living room of Germans were, are not accepted. That could be chemicals or even hidden adornments.