What is the fear of dogs called?

Cynophobia

The fear of dogs is called Cynophobia. The word "cyno" comes from the Greek word for "dog". People with cynophobia may avoid dogs altogether, or to experience severe anxiety when they are around dogs.

The other options are:

• Equinophobia: fear of horses
• Elurophobia: fear of cats
• None of these: There is no phobia specifically for the color purple.