Everyone has the need to touch. Many humans are uncomfortable hugging or touching strangers, even those close to them. Some people are alone and have no hands to hold, no bodies to hug. But rubbing the fur of a cat or dog can provide a stimulation that is sorely lacking. The nonverbal connection is invaluable in the healing process.
Pets are a source of expectation, hope and communication.
Looking forward to a social call or getting home after time away gives that spark of anticipation all humans need to help feel alive. Pets can help start a conversation, and help one who is struggling against unusual difficulties in learning to speak for the first time or after a speech impairment such as a stroke. Corps dogs work with police and military personnel to uncover drugs, bombs and criminals. At airports, specially trained beagles scramble through cargo and baggage for illegal contraband, including foreign viruses. They aid the blind and assist the deaf and disabled.