Symptoms of overdose of antibiotics in dogs:

1. The more common symptoms are diarrhea, vomiting, depression, liver and kidney damage, etc.

2. It may cause functional damage to the liver and kidneys, resulting in some secondary symptoms of liver and kidney damage.

3. Some antibiotics may affect bone development in young dogs.

Precautions for excessive feeding of antibiotics to dogs:

1. There must be strict indications for medication. Viral infections or nonbacterial fever should be considered contraindications to antibiotic use.

2. Antibiotics should not be used indiscriminately. They should be used according to the condition of the pet. Be sure to follow the veterinarian's prescription and use antibiotics specifically designed for pets.

3. When a certain antibiotic is not effective in dogs, factors such as insufficient dosage, short medication time, improper route of administration, and poor systemic immune function should be considered.