Dogs frothing, not eating, and being lethargic may be due to a variety of reasons:

1. The dog may have gastrointestinal irritation due to eating indigestible food or swallowing foreign bodies. , and symptoms such as frothing, not eating, and lack of energy appear.

2. Dogs have fragile stomachs and are prone to frothing, not eating, and lack of energy after catching a cold or catching a cold.

3. If the dog accidentally eats poisonous items or things that are irritating to the gastrointestinal tract, such as rat poison, cockroach poison, etc., it will cause it to foam at the mouth and twitch.

4. When dogs suffer from gastroenteritis, they may also vomit due to inflammation of the digestive organs. Symptoms include foaming, not eating, and lack of energy.

5. If the dog has not been vaccinated or revaccinated, it is easy to suffer from infectious diseases such as parvovirus and canine distemper. These viruses will attack the dog’s digestive system, causing it to foam and become indigestible. Symptoms such as eating and lack of energy.

In addition, dogs frothing, not eating, and lack of energy may also be caused by parasitic infection, lack of exercise, motion sickness, menstrual period, etc. If the dog’s symptoms persist or worsen, it is recommended to take it to the pet hospital for examination and treatment in time to avoid delaying the condition.