Are all the movies of (Animal World) made by (National Geographic)?

The sources of those films in Animal World are varied, and most of them are from abroad. Compared with foreign countries, there are some gaps in shooting technology, especially underwater photography, but the gap is not very big. The main reason is that the number of field animal investigators in China is relatively small, and there is also a lack of financial support, which makes China in a relatively backward state in the study of animal activities.