There are a few different versions of the Ralph Lauren logo. The typical Ralph Lauren logo consists of words 'Ralph Lauren' separated by a polo player on a horse.
Polo by Ralph Lauren
Polo
No, actually, they're not. Ralph Lauren and Polo have a similar logo, though.
Ralph lauren
Polo Ralph Lauren
Ralph Lauren Polo!
two guys playing polo
Ralph lauren
Ralph Lauren
No, but Ralph Lauren simply sells polo shirts (hence the small polo icon on each shirt).
Lacoste is a popular premium clothing company. The logo that is found a shirt made by Lacoste is a green crocodile. The brand itself is named after its famous owner Rene Lacoste.