noxious - injurious to physical or mental health; noxious chemical wastes; noxious ideas. harmful - causing or capable of causing harm; too much sun is harmful to the skin; harmful effects of smoking.
Newborn kittens, also sleep more -- upwards of 16 hours a day. Although newborns sleep a lot, it generally isn't continuous. Newborn kittens take frequent naps which often last for mere minutes at a time. Young cats usually develop their sleeping behaviors once they're around three months in age.
Anywhere from 16 to 20 hours a day, typically. A newborn sleeps almost 24/7. Cats do spend at least two-thirds of their lives asleep. Cats are crepuscular, that means they are most active during twilight. So usually while you are asleep, cats spend their time awake, investigating your house.