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A police officer stops to help a cow that was hit and almost killed by a car. An awesome act of kindness!
A pet (or companion animal) is an animal kept primarily for a person's company or protection, as opposed to working animals, sport animals, livestock, and laboratory animals, which are kept primarily for performance, agricultural value, or research. The most popular pets are noted for their attractive appearances and their loyal or playful personalities.

Pets commonly provide their owners (or guardians) physical and emotional benefits. Walking a dog can supply both the human and pet with exercise, fresh air, and social interaction. Pets can give companionship to elderly adults who do not have adequate social interaction with other people. There is a medically approved class of therapy animals, mostly dogs, that are brought to visit confined humans. Pet therapy utilizes trained animals and handlers to achieve specific physical, social, cognitive, and emotional goals with patients.

The most popular pets are likely dogs and cats, but people also keep house rabbits, ferrets; rodents such as gerbils, hamsters, chinchillas, fancy rats, and guinea pigs; avian pets, such as canaries, parakeets, and parrots; reptile pets, such as turtles, lizards and snakes; aquatic pets, such as tropical fish and frogs; and arthropod pets, such as tarantulas and hermit crabs.

Some scholars and animal rights organizations have raised concern over pet-keeping with regards to the autonomy of nonhuman animals.

 source- http://www.bubblews.com/news/4753752-save-animal