Here's what you should do:
1. Don't panic: While it's natural to be worried, remember that your vet is the best person to assess the situation.
2. Schedule an appointment with your veterinarian immediately: Explain the situation to them, including how quickly the lumps are growing.
3. Provide your vet with as much information as possible: This includes your dog's age, breed, any recent changes in diet or activity level, and any other symptoms you've noticed (e.g., lethargy, weight loss, appetite changes).
Possible Causes and Treatments:
Your vet will likely perform a physical exam and may order tests to determine the cause of the lumps. Some possible causes include:
* Lipomas: These are benign fatty tumors that are very common in older dogs. They usually grow slowly and rarely cause any problems.
* Mast cell tumors: These tumors can be benign or malignant, and they can grow quickly. They are more serious than lipomas and may require surgery or other treatment.
* Other conditions: Other, less common conditions could also be responsible.
Your vet will discuss the best treatment options based on the diagnosis. This may include:
* Observation: For benign lipomas that aren't causing problems, your vet may simply recommend monitoring them.
* Surgery: If the lumps are causing discomfort or are suspected to be malignant, surgery may be necessary to remove them.
* Chemotherapy or radiation therapy: In cases of malignant tumors, these treatments may be used to control the growth or spread of the tumor.
Remember, it's crucial to act quickly and seek professional veterinary care. Don't delay in getting your Labrador examined. Early diagnosis and treatment can significantly improve your dog's chances of a good outcome.