The ecological crisis we face today warns us against the danger involving the continuous and abusive exploitation of nature as an inexhaustible source of raw materials at the service of mankind s inventions. Besides the degradation of a significant part of its ecosystems, the use by the drug and food companies alone, accounts for a great deal of a rampant exploitation of those classified as being deprived of reason, affection or will. In this sense, the pursuit for a more ecocentric ethics is mandatory. To think of an ethics that embodies the relationship between men and animals, we resort to the concept of sympathy, created by the Scottish empirical philosopher David Hume. The concept, elaborated as a principle of moral distinction among men, is also present in the mental operations of animals as they interact among themselves. We advocate that the concept of sympathy, as a means of communication of feelings among humans and among animals, can also be extended to the relationship between the men and animals, thus contributing to the evolution of human conduct towards the welfare of these creatures, especially when it comes to large scale production. In order to do so, we will make use of the perspective of those who raise and work with animals, using the analysis of Vinciane Despret e Jocelyne Porcher to support this thesis, found in their book Être Bête. Also, we aim to express our criticism to animal husbandry as a science which helped reinforce the mechanization of animals, thus isolating them from men, making them into products and twisting the concept of well being itself, which we will try to ascertain.