Misdogyny

Dislike of, contempt for, or ingrained prejudice against dogs, hounds, pups, or other canines. Misdogyny is a primary cause of discrimination and stereotyping against man's best friend.

"Wow! Sharon's mother really hates dogs!"
"She's not the only one, Claire. The amount of misdogyny in this town has only grown since Mr. Calhoun's incident with that pit bull."