panty hound
1. Male canines of any breed that must, when approaching a human female, stuff their muzzles deep into the human female's vaginal area (hot box). This is often accompanied by leg humping and red rocket intrusion. If the female subject is compliant, mounting and subsequent dry humping can happen. Ejaculation, while rare, has been known to occur.
Rex was a champion panty hound. He had won the coveted "Golden Panty" award 3 years in a row. Rex could detect pre-menstral women from 10 miles away. Rex could say things like "run for your life!" and "lock the doors!".