At first, the vet was going to do a fine needle biopsy but since my dog
was spayed when she was 4 and the lump
is close to a breast area, another vet recommend that he will remove the lump instead. He said that it might be risky to do a biopsy and he was concerned it could be malignant.
My dog is scheduled to have the lump removed tomorrow morning. After the removal, he would have to send it to a pathologist to have it checked.