Will my dog scare rats away?
A nearby dog may frighten a rat away, but this is a possible short-term effect, not a dependable control method. Do not rely on barking, dog scent or chasing to resolve an infestation. Rats can still find food and shelter when your dog is elsewhere.
Do not encourage your dog to catch rats or investigate burrows. Supervise them and keep them away from rodents, droppings, bait and traps. Seek veterinary advice after a bite or suspected ingestion. Ask your vet about appropriate leptospirosis vaccination; vaccination does not replace avoiding exposure.