Which of the following is an example of pet therapy?

Pet therapy is a therapeutic intervention that involves bringing trained animals, typically pets, into various settings to provide comfort and emotional support to individuals. The primary goal is to enhance the well-being of patients or residents in facilities such as hospitals, nursing homes, or rehabilitation centers.

Bringing pets into facilities for companionship is a classic example of pet therapy, as it directly involves the interaction between trained therapy animals and individuals who may benefit from emotional and social support. The animal's presence can help reduce stress, improve mood, and promote social interaction among residents.

The other options describe different aspects of human-animal interaction but do not specifically encapsulate the concept of pet therapy. Physical activities with animals may promote physical health but lack the specific therapeutic intent of pet therapy. Training pets for medical assistance refers to service animals, which have a different role focused on aiding individuals with disabilities. Feeding pets in nursing homes does not involve therapeutic interactions but rather routine care activities without the direct emotional benefits associated with therapy animals.