Oral presentations given during the BSAVA Abstract sessions 24-26 May 2021. Does homeopathy extend survival time in dogs with osteosarcoma: preliminary findings; Retrospective analysis of the metastatic behaviour of anal sac adenocarcinomas in dogs; The toxicity profile of zoledronic acid in dogs - a single centre retrospective study; Lung lobe torsion secondary to pulmonary papillary carcinoma in a dog; Renal nephroblastoma in dogs: signalment, histologic features and outcome in 10 cases; Treatment of acute megakaryoblastic leukaemia and severe nonregenerative anaemia in a labrador retriever; A survey of malignant neoplasia in Spaniels; Investigation of the value of ultrasound appearance of the liver and spleen and subjective appraisal of the draining lymph node’s size as predictors of metastasis in the staging of mast cell tumours (MCT); Incidence and risk factors for feline mammary tumours in UK primary care practice; Incidence of urinary tract infection and its effect on outcome of dogs diagnosed with multicentric intermediate to high-grade lymphoma; Evaluation of C-reactive protein (CRP) as a prognostic marker in patients with histiocytic sarcoma; Diagnosis of large granular lymphocyte (LGL) lymphoma via aqueocentesis in domestic cats; Thymic epithelial tumours in 51 dogs: clinicopathologic and histopathologic findings.