In some traditions, certain animals are associated with demonic entities. For example, the owl is associated with Moloch the god of sacrifice; the goat with Baphomet the goat-headed god; the fly with Beelzebub, also known as "Lord of the Flies"; the snake with Satan, and reptiles with reptilian humanoids. I am no expert on these traditions or entities, although I've had a nightmare or two in which I saw entities that seemed to have reptile-like qualities.
However, I am open to the idea that these entities exist, and even if they do, it has no bearing on my impression of the animals associated with them.
