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.
On average, a cat will sleep for 16 hours a day. A domestic cat can run at speeds of 30 mph. The life expectancy of cats has nearly doubled over the last fifty years. Blue-eyed, white cats are often prone to deafness. The cat's front paw has 5 toes and the back paws have 4.