While not the most typical wall art that you can purchase, there is a certain allure to cow and bull art, which recently had a popularity increase. Stating that a bull is a magnificent creature is an understatement to say the least.
The only way to increase the impact of such wall art or painting is to portray a herd of cows instead of a solitary cow or bull. The room where you decide to hang the painting has a lot of importance.
Such paintings or pieces of art are generally suited to being placed in the lounge. The reason for not placing them in the bedroom is that they might draw away attention from the room itself instead of complementing it.
However, if the painting is only a basic, simple cow or a bull painting which utilizes light colors, then it may be more appropriate to hang the painting in your bedroom.