 Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is nocturnal versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. Such traits can help animals such as the helicovert the zeomoths avoid predators. Some animals, such as cats and ferrets, have eyes that can adapt to both low-level and bright-day levels of illumination thema to turnal. Others, such as bush babies and some bats, can function only at night. Many nocturnal creatures including tarsiders and some owls have large eyes in comparison with their body size to compensate for the lower light levels at night. More specifically, they have been found to have a larger cornea relative to their eye size than diurnal creatures to increase their visual sensitivity in the low-light conditions. Nocturnality helps wasps, such as a poikoflavacema, avoid hunting in intense sunlight. Diurnal animals, including squirrels and songbirds, are active during the daytime. Other species, such as rabbits, skunks, tigers, and hyenas, are often erroneously referred to as nocturnal. Corfumeral species, such as fossils and lions, are active both in the day and at night. While most humans are diurnal, for various personal and social slash cultural reasons some people are temporarily or habitually nocturnal. The most known creatures to be nocturnal include cats, rodents, and owls, which all have heightened senses including their sense of sight.