Absolutely. Take a look at the breed standards from around the world www.boxerworld.com/standards
They all describe the same dog, but language
tends to make a bit of a difference in how people imagine the dog should look. It shouldn't though - so it's worth being familiar with all the standards, IMO the FCI in particular (it's the one in widest use around the world, and it's also written by the German Boxer Klub (and the boxer is a German dog)).
Then take a look at this site: www.worldwideboxer.com
See the differences, and see the lack