Bullgender

Bullgender or cowgender is a cow-related gender or kingender that encompasses feeling masculine and connected to cows/bulls in someway. It could be a specific bull in one's mind, or it could be unspecified. One can also combined it with other genders to make bullgirl, bullboy, etc.

History
This term was coined by wikia user OrangeCardinal5 to explain Bull's gender experience.

Flag
The flag represents being bullgender with a cow stripe in the middle. The blue represents feeling masculine.