Using a machete to fight rat dogs is extremely dangerous and not recommended. Rat dogs may become frightened and act defensively or aggressively, which can lead to serious injury or even a dangerous situation.

Safety and protecting yourself are the most important things when conflicting with animals. If you have a problem with rats, dogs, or other animals, here are some more appropriate things to do:

Avoid provocation: Try to avoid irritating rats, dogs, or attracting their attention. Don't actively provoke or threaten them.

Keep a distance: Keep a safe distance from rats and dogs, and avoid getting too close or interfering with their territory.

Use protective measures: If you need to enter an area where rats or dogs may be present, consider using appropriate protective equipment, such as long-sleeved clothing, gloves, etc.

Seek professional help: If a rat or dog poses a threat or creates a problem, it is best to seek help from a professional animal control or related agency who has the experience and appropriate tools to handle the situation.