Copyright, a form of intellectual property law, protects original works of authorship including literary, dramatic, musical, and artistic works, such as poetry, novels, movies, songs, computer software, and architecture. Copyright does not protect facts, ideas, systems, or methods of operation, although it may protect the way these things are expressed.
From:
http://www.copyright.gov/help/faq/faq-general.html#what You can search for a copyright there....or you can "google" the words and see what comes up.
Note: You can copyright your website and its contents (a good idea). You can do this just by claiming copyright (C) and the date and keeping records/copy's (important!) of your website. A simple print out or saved file will do.
Now here's the rub (amongst others...) A copyright is a really poor way to try to protect a "name", and is not meant to do so. But a good example of how you can run afoul of copyright would be to call your bait a Harry Potter Creature Bait. Although the author of Harry Potter probably does not have Harry Potter trademarked in this class of goods....I'd bet you would get a cease and desist letter from her Attorney!
If you were the first person to call your creature bait a very unique set of words (on a website, catalog or other platform) you could try to stop others from using it by claiming copyright (it would be weak...but sometimes just the nasty letter does wonders!).
So...to really protect the name of the bait in the class of goods you sell in...you would need a "trademark". A trademark is not expensive (as these things go)...but it's unlikely an average bait guy wants to spend the money!
The name of a bait should be "trademarked" to be protected.
FYI...
A "design patent" is is a patent granted on the ornamental design of a functional item.....the "way it looks".
A "Utility patent" is how something works and must be unique and novel , and "not obvious".
So our friends at the big bait company's can (and should to protect their design and marketing investment) file both a Trademark on the unique name of the bait, and they can file for a "design patent" on it's appearance ...assuming it is new and unique.
Disclaimer: Although I am the Intellectual Property Manager for a high technology plastics company, I am not an Attorney and therefore not offering legal advice. If you have any concerns, you should contact a trademark or copyright Attorney.