vanha koira ei opi uusia temppuja

== Finnish == === Alternative forms === vanhalle koiralle ei voi opettaa uusia temppuja === Etymology === Literally, “an old dog will not learn new tricks”. === Proverb === vanha koira ei opi uusia temppuja you can't teach an old dog new tricks (it is difficult for an old person to learn new things) Used other than figuratively or idiomatically: see vanha,‎ koira,‎ ei,‎ opi,‎ uusia,‎ temppuja.