If your dog is showing too much aggression in guarding their food, water dish or dog dish area:
Before any dog training is done, an owner should first make sure that their dog is provided with a set up for the food that will make them feel safe and eliminate some of the instinct of needing to protect the food.
Clean your Chihuahua’s food dish and water bowl when your dog is not looking
Try to fill the bowl when your dog is out of the room, only after the food is in the bowl and set down in the area, should you then call your Chihuahua to dinner
Assigned an entire corner of a room to your Chihuahua for their dog food and water. This should be in a very quiet room of the house. You may wish to put down a place mat or even a kitchen rug to make it clear to all family members and visitors that this is the dog’s one special area.
Many people, of course, feed their dog in the kitchen. However, if your kitchen is that one room in the house where everyone gathers…you may find a quieter spot in an enclosed porch, corner of the living room, den, etc.
The main goal here is that your Chihuahua has their own corner for their dog food and water, clearly defined and offers them a quiet place to eat without distraction.
Once you have designated a spot for your Chihuahua to eat and this area is clearly defined as being off limits to everyone, it is also important that everyone, both family and guests, respect this area.
Creating a dining spot for your Chihuahua in the corner of your den will not help if people are continually entering the room to get books, watch TV, etc. Your Chihuahua should be allowed to eat without excessive noise and without distractions.
If you have more than 1 dog or perhaps a cat or other pet…be sure to offer all animals their own special area to eat; this will knock out any perceived competition for food.