The document describes 5 main types of clouds: 1) Cirrus clouds are very high, wispy ice clouds. 2) Cumulus clouds are large, puffy clouds that sometimes resemble animals or objects. 3) Cumulonimbus clouds can produce rain, hail, lightning and thunder when they darken. 4) Stratus clouds are low, wide clouds that cover the sky and cause gray days. When rain falls from them they are called nimbostratus clouds. 5) The document includes images of mammatus altocumulus clouds and a supercell cloud near Amarillo, TX.