Mini cows may seem strange, but these miniature breeds of cattle may offer a good answer to some of the problems facing modern cattle ranching. The mini cow, with its small size and reduced resource needs, is catching the eye of many agriculturalists.
Whereas normal cows are large animals, miniature cows are usually under a metre tall. The small size of their body means that they need little space and food compared to normal cows.
Many farmers have realized that several miniature cows can be kept on a piece of land that would normally accommodate a few normal cows. This may be beneficial to many farmers who have small plots of farmland.
Key potential advantages include:

Cattle farming is usually mentioned in the context of greenhouse gas emissions, especially methane. As miniature cattle require less feed, the proponents claim that they may offer a better way of conducting animal farming.
Miniature cows are not an end-all solution to the environmental problems in agriculture. They can have their own set of advantages, which may depend on factors like breed and feeding system.
Even though miniature cows appear to be a new concept, small cows breeds have been around for ages. In the past, smaller animals were very helpful to farmers with limited land available.
Nowadays, there is an increasing popularity of such cattle because farmers try to experiment with different livestock models.
Miniature cows have the potential to be much more than just something interesting to look at within the agricultural sector; they can also become very intriguing pets in the right setting. If the conditions for mini cow ownership are met, you should definitely consider adopting one.
References Link: https://www.theguardian.com/environment/2010/jul/25/miniature-cattle-environmentally-friendly-beef