RORY: Dogs started barking.
LORELAI: Because they heard about the garlic incident, and no one likes getting screwed, Rory, not even a Schnauzer.
A Schnauzer is a breed of dog which originated in medieval Germany – its name means “snouter” in German, as the dog has a distinctive bearded snout. Originally bred as a ratter and guard dog, schnauzers are intelligent, independent, protective, and energetic. They need a lot of training and exercise. Schnauzers come in different sizes, and have a shaggy coat, usually black, grey, or salt and pepper. As happens in this episode, schnauzers tend to bark a lot, especially if they feel threatened – Lorelai must have sounded very loud and angry.
The Annotated Gilmore Girls 