Owners Get New Kitten for Their Cat—Their Relationship Goes Viral

"Been 3 [years] since getting my cat a kitten. They HATE each other. Had to get the kitten a kitten," one user commented.

Cat’s First Reaction to New Kitten Breaks Hearts Online: ‘Those Ears’

According to the U.K. charity Cats Protection, introducing a new kitten to an existing cat should be done gradually. Owners ...