The term 'DOG's life' can be broken down into three crossword solutions: ITSA (4 letters), LEADA (5 letters), and LEADSA (6 letters). ITSA stands for 'It's a', LEADA stands for 'Lead a', and LEADSA stands for 'Leads a'. This phrase is often used to describe a life of hardship, as it implies that someone is leading a difficult life. It is also used to describe a life of luxury, as it implies that someone is leading a life of ease and comfort.