Animals such as horses or oxen that are known for their strength to work either pulling someone or in agricultural purposes are replaced by modern machines like tango or ox carts by e-rickshaws.In agricultural field, machines like tractors, harvesters,etc. replaced them due to their high efficiency. So, nowadays oxen are send for their meat or leather, or travelling streets to find some food to live. People who have ox or horses are mostly affected.I want to say that modern machines should be use but such animals also need a revolution like combining that animals with high tech machines that make them useful either producing energy or something else, that lead to their good life with their use in something. Thats all my problem.