Interesting that I have recently come across a number of Dinghy Dogs (minus the TM).
First off: http://dinghydogs.com/
A type of floatation device.
Second: I don't actually have a link to prove it, but I was watching Adventure Time
the episode "Mortal Folly", and Jake (a yellow dog) turns himself into a floating raft and says something like..."I'm your dinghy dog!" or "I'll be the best dinghy dog!" I'm not entirely sure which one it is.
In any case, I found it weird, or interesting, or ... something.
Seems SOMEONE is infringing on LeChuck's trademark rights.