Cats are popular as pets because they respond positively to our attention and affection.
Since cats are predatory animals that hunt alone, it was previously believed that they were not social. However cats left to their own devices do share territory and build long lasting relationships with other cats. When cats are kept as pets, they become attached to their human friends and can be taught to come to a call or wear a leash, contrary to popular assumption. Additionally, cats are particular about their elimination habits. This makes training them to use a litter box indoors very easy.