Despite the unbeatable night vision, the eyesight of a cat during the day is not too dissimilar to that of a human! For this reason cats are more likely to be nocturnal hunters in search of small rodents and birds. The average domestic cat sleeps about 18 hours a day and tends to spend its waking hours hunting for food. Although wildcats are solitary, the domestic cat enjoys the attention of humans and other animals and often gets along well with some dogs.