Take your time: How many creatures can you see in this image?

The most prominent is the Elephant, at the top of the head, followed by the white rabbit on his nose.

This is because our brains are drawn to the most obvious, straightforward, image first.

This is an effective illusion; on the whole it resembles a portrait of the human face with its muscle tones revealed, beneath the skin, particularly with the use of reddish brown tones.

Illusions such as this have become popular posters for their artwork.

Count the animals. can you see them all?

(source)