Enables 3-hydroxybutyrate dehydrogenase activity and phospholipid binding activity. Involved in several processes, including animal organ development; response to corticosterone; and response to peptide hormone. Located in mitochondrial inner membrane. Biomarker of hyperthyroidism. Orthologous to human BDH1 (3-hydroxybutyrate dehydrogenase 1). [provided by Alliance of Genome Resources, Apr 2022]