SINGLE KITTEN SYNDROME -- What is it? After studying cat behavior and returns of adopted kittens/cats some observations have been made. A lonely kitten can be a real “cat-tastrophe” for felines and humans alike. With Single Kitten Syndrome, kittens grow up to be cats with “cattitude.” They tend to play too roughly and often get returned when they reach adulthood and their behavior isn’t so cute anymore. In order to become well-socialized cats, kittens need to learn appropriat