This topic is part of the Animals and Society branch of study in the field of Sociology, and is also an issue with the values and responsibility of pet ownership.
This anxiety is explained in a theory by Clinton Sanders, who notes that a close relationship with a companion animal shapes the construction of the owners’ identity, and forms the basis for interaction.
In public animals serve as social facilitators and encourage openness to the point where strangers feel welcome in approaching the human-pet couple.
Several studies have concluded that homeless people attribute their pet with saving their life, getting them off of drugs or alcohol; one researcher noted that many dog owners reported their dogs knew when they were sad or emotional, an example of the ‘empathetic experience” of a human-pet connection.
[5] Leslie Irvine argues pet ownership prompts many to act responsibly, with many making a deliberate choice not to drink or use drugs, and to avoid contact with substance abusers or those involved in any criminal activity for fear of being separated from their pet.
The pet is dependent on them for food and care and this gives the owner a sense of responsibility and a positive self-image and self-worth.
San Francisco initiated a program which addressed both homelessness and animal shelter overcrowding: WOOF – Wonderful Opportunities for Occupants and Fidos.