 Size : Labradors are a medium @-@ large breed . They should be as long from the withers to the base of the tail as they are from the floor to the withers . Males should stand 22 to 24 inches ( 56 to 61 cm ) tall at the withers and weight 65 to 80 lb ( 29 to 36 kg ) . Females should stand 22 to 24 inches ( 56 to 61 cm ) and weigh 55 to 70 lb ( 25 to 32 kg ) . By comparison under UK Kennel Club standards , height should be 22 to 22 inches ( 56 to 56 cm ) for males , and 22 to 22 inches ( 56 to 56 cm ) for females . 
