Enables bile acid:sodium symporter activity. Involved in several processes, including bile acid and bile salt transport; bile acid signaling pathway; and response to 17alpha-ethynylestradiol. Located in basolateral plasma membrane. Biomarker of alcoholic hepatitis; cholestasis; and obesity. Orthologous to human SLC10A1 (solute carrier family 10 member 1). [provided by Alliance of Genome Resources, Apr 2022]