by Steve Reiss of www.reisspatents.com.
In Moseley v. V Secret Catalogue, 537 U.S. 418 (U.S. 2003), the US SC noticed that the term "BullDog" had been trademarked "over one hundred times by 1923".
As of today, there are 173 service/trademarks including some form of "bull dog." Of these, 58 are alive and 115 are dead.
There are only 26 total for whippet and 37 for dalmatian.
Too bad it is not easy to find out which dog breed has been used the most in trademarks.