Buddhists please realize.
During the long journey of sansara you can have any form of life, they may be visible like most of the animals, invisible like Pretha and Devas, and microscopic. They may be occupying different environments also.
The fact is, u can be any of these life forms depending on the way u choose to live. Like the one already said he wouldnt care about chicken.
Though your family is a one unit and care for each other each of those members have many different features and capacities, each is having his own path.
Buddha once said throughout this sansara you cannot find any being that had not been ur wife, ur mother, ur brother, ur sister or ur father. Sansara is as longer as that. This remark stresses the fact that we should treat all likfe forms alike, all are struggling in the sansara. Be it a chicken or a cow or a human. Siyalu sathwayo maranayata biya weth, thts wht Buddha said.
U cannot take life of any animal, think of animals as an entity which was once ur father, mother..love and protect them...