Inflammation in dogs can cause swollen lymph nodes. The lymph nodes belong to the immune organs of the dog, and whenever there is an infection, the immune organs will go to attack the pathogen and the lymph nodes will become swollen, which is a hint of a more serious infection. There are also some diseases with similar symptoms to the flu, such as canine parainfluenza virus, and it is recommended that they be brought to the vet in time for relevant examinations. In general, swollen lymph nodes in dogs usually occur in the parotid gland, swollen lymph next to the parotid gland and swollen lymph in the jaw, which makes the whole dog’s face look big.
