Shocked father Stephen Forse spotted the mouse in a loaf he was using to make sandwiches for his children.
Mr Forse bought the bread from Tesco Online and had already used some of it when he noticed "a dark-coloured object embedded in the corner of three or four slices".The 41-year-old father from Kidlington in Oxfordshire first though it was a section of unmixed dough but quickly realised his mistake.