Well not all animals are always active. Some animals are active in the day and some are active at night. Why do you ask this?
nocturnal animals are active at night diurnal animals are active during the day and crepuscular animals are active during twilight hours
Animals that are active from dusk onwards are known as 'Nocturnal'. :)
If I understand your question correctly, you want to know WHEN nocturnal animals are active. In response, they are active during the night, when it is dark outside.
nocturnal
because nocturnal describes animals as more active at night
Crepuscular animals -- at dawn and/or dusk
it is a period in animals where they become sexually active
Jaguars are nocturnal animals.
nocturnal
no
Animals that are active in the night are described as "nocturnal." Perhaps the "u" is incorrect.