The snake dream is probably one of the most common of all the categories of animal dreams. These dreams reveal the serpent – the devil with his demonic hosts- at work through accusation, lying, attacks, etc. Other common dreams of this nature include dreams of spiders, bears, and even alligators. Spiders and bears are two other major animals that appear in dreams that show fear. The spider in particular, releasing its deadly poison, is often a symbol of witchcraft and the occult.