Brass is cleared of the shooting of Officer Bell.

Warrick: I was watching that on cable some Japanese guy ate like 64 hotdogs in 12 minutes.
Catherine: Yeah.
Warrick: He's the most famous guy in Japan behind Yao Ming.
Doc Robbins: Yao Ming is Chinese.

Warrick: Wow, your wife made a pie.
Doc Robbins: I made the pie. Strawberry rhubarb.
Warrick: I'm impressed. Why don't you take it easy with your cutting there, Doc. It's starting to look like that hit and run on your table last week.
Doc Robbins: Just try it. You know it's vegan. Low fat, low sugar, low carb.
Warrick: Low taste.

Catherine: How about the grill marks?
Hodges: Oh yeah, I'll run it through the hot dog appliances database.

Greg: I went shopping and I bought every brand of hotdog they sell in Las Vegas.
Grissom: Who's paying for it?
Greg: You mean the lab's not gonna reimburse me?
Grissom: No.
Greg: Well I couldn't identify the chetter teeth logo so I figured I could physically match one of these to the one found in the victims stomach. You know, may be comparing that twisty thing at the end.
Grissom: Sounds like a good idea, Greg. I'm still not paying for it.
Greg: Fine, I guess I'll just eat hotdogs for the rest of the year.

Grissom: Good luck. I'm rooting for you.
Greg: Well, hopefully I find a weiner.

Hodges: I heard your case is going to the dogs.
Nick: Oh, Hodges heel, or better yet, play dead.
Hodges: I'm throwing you a bone.

Catherine: This place used to make a hell of a meat loaf sandwich. You ever eat here?
Grissom: Not since the chef blew his brains all over the kitchen.

Sara: Their marriage ended in a dogfight and only the dog survived.

Sara: Their marriage ended in a dogfight and only the dog survived.

Sara (to Nick about dead victims' record collection): There's something missing between The Beach Boys and Billy Joel.
Nick & Sara: The Beatles.

Title: Dog Eat Dog

The term dog eat dog refers to the brutality of life, in the form of starving dogs fighting and then the winner eating the loser, suggesting that life is a zero-sum game, and in every scenario there is a winner and a loser. The title is a clear riff on the subject matter of hot-dog eating competitions.

Sara: That's like saying there was another shooter at the grassy knoll.

This is a reference to the 1963 assassination of U.S. President John F. Kennedy by Lee Harvey Oswald. One commonly believed conspiracy theory about the event is that there was another shooter, and a common location for placing him is on a nearby grassy knoll.