Causes of dog allergies:

1. Infection with external parasites, such as fleas, lice, tick mouthparts, saliva, and excrement allergies.

2. Skin mite allergy.

3. External contact allergies, such as dust, pollen, plants, chemical fiber fabrics, and some even bath liquid allergies.

4. Food allergies. Different dogs are allergic to different foods, and the owner can only eliminate them one by one.

Methods to prevent dog allergies:

1. Keep the room ventilated and breathable. This can effectively reduce the amount of dust in the room. A small number of dogs may be allergic to dust and other small substances.

2. Clean regularly. Sofa covers, bedding, curtains, dog's nests and toilets are all places that can easily carry allergens. At the same time, things that dogs often come into contact with should also be changed and washed regularly, so that allergens can be effectively removed.

3. Groom your dog frequently. If the dog's hair is too long, it is very easy to harbor dirt. On the one hand, combing the dog's hair can prevent the dog's hair from getting tangled. On the other hand, it can also clean the dirt and bacteria on the dog's skin and hair.

4. Bathe your dog regularly, and you can use a shower gel specially designed for sensitive skin.

5. Ensuring a balanced diet and improving the dog’s own immunity are also effective ways to prevent dog allergies.

6. Wipe your body thoroughly after returning home from an outing. Pay attention to the need to use wiping items that can directly come into contact with dogs, which will help reduce their overall contact with allergens.

7. Deworm your dog regularly.