Doberman gator

The Doberman Gator was a reptile-like animal that was cut out from Halo 2, but appeared in its Collector's Edition DVD.

Transcript
Robert McLees: "Hey!"

Marcus Lehto: "There you go, Rob."

Shi Kai Wang: "It's the... uh..."

Robert McLees: "Gator?..."

Shi Kai Wang: "Dog?..."

Robert McLees: "Doberman?..."

Marcus Lehto: "Doberman Gator?"

Trivia
It appears from the transcript above that Bungie originally did not know what to name the creature, and simply fused "Doberman" and "Gator" together to form "Doberman Gator".