A simple search of 29 categories and 30 categories shows that there are nearly 20,000 valid trademarks with the word "Niu".
If you want to add the word "cow" to your name to apply for a trademark, there are some suggestions for reference.
(1) cannot contain the same or similar politically sensitive elements as the country name, national flag, national emblem and military flag (this is very important).
(2) It cannot be a place name of an administrative region at or above the county level or a foreign place name well known to the public. For example, jinniu district in Chengdu and Wengniute Banner in Inner Mongolia.
(3) Don't deliberately copy and draw lessons from the names and logos of existing trademarks.
(4) Avoid common names. For example: beef, cow's head, cow's hoof and other meaningless words.