You might be used to seeing animals in the zoo during the daytime, but have you seen them at night?

From July 14 to August 19 this year, Hangzhou Safari Park has promoted a “Night at the Zoo” event which has attracted many visitors, including plenty of photographers who stayed for a long time to capture unique images of the animals.

Instead of sleeping, many of the beasts will stare at the visitors. Even when viewed from behind glass or from high above, it can be frightening. Check out the images of the ferocious animals giving a "death stare."

Safari parks and zoos in countries and regions have these kinds of events, as an increasing number of visitors are curious about how the animals act in the darkness. Many even travel overseas to get this kind of experience.