The French company Lacoste uses the crocodile on their apparel. From 1952 to 1993, the shirts and hats made by Izod Lacoste used the logo, and it became identified with Izod.
A very similar design is used by the Hong Kong clothing company Crocodile Garments, which after legal action altered theirs to become more distinctive.
PUMA
Regatta
if you mean camouflage clothing, its german second hand army clothing.
Cohen and Zimmerman
Comme des Garcons :)
Zynga Game Network
Abercrombie and Fitch
Lacoste
The Lacoste company has a series of shirts in the year 2009 with a small fish logo instead of the usual alligator.
Humans hunted aligators for clothing and food.
I read it at Kirisuto once. A clothing company I think uses kurusso.
Champion (the sportswear company) uses the slogan "How you play."