There are several types of camouflage that help things become hidden. First, there's 
disruptive coloration, which uses patterns like stripes or spots to break up a shape.  ๐
Think of a zebra's stripes! 
Second, 
background matching makes an animal look like its environment, like how a chameleon changes color.  ๐ฆ
Third is 
mimicry, where something pretends to be another object, such as a stick insect that looks like a twig.  ๐ฟ
Lastly, 
counter-shading is when an animal is darker on top and lighter below, helping it blend in with the light from above, like a shark!  ๐ฆ