Also called mock suns or parhelia, sundogs are bright, colorful light patches which appear in ice clouds 22° or more to either side of the Sun.At sunrise and sunset,the angular separation from the Sun is exactly 22°.When the Sun is high, the sundogs may appear diamond-shaped, and no sundogs can occur if the Sun is higher than 61°. In addition, a bluish streamer is sometimes seen extending from them in the direction Sun.