Quagmire rushes to the Griffin family household and beats Brian senseless, leaving him badly injured.

It's not funny, even in an Itchy and Scratchy sort of way. Although Brian was initially scared of Quagmire, hoping that he wouldn't be mad at him. Quagmire accepted as long as he didn't offend the new chick he was gunna bang. He would then march on over to Brian's house, bust in, and beat the living shit out of him in a very graphic and drawn-out manner.

It happened because the writers thought it would increase ratings.Oh, why bother? When recreating the 12 way orgy, Quagmire instructed Brian to play the role of the ugly girl at the bottom. In that episode where Brian kisses Quagmire's dad, Quagmire beat up Brian.

Isn't a dog stronger than a baby anyway? Quagmire was disappointed with the quality of his hotel and wanted to find Brian to get a refund.

Wanting to make a few more quick bucks, Brian tricked Quagmire into buying a highly expensive and really crappy hotel. As Quagmire leaves, Brian retaliates by telling him "Hey, I fucked your dad", before slamming the door shut. Brian gets the final word, when he tells Quagmire about having sex with his dad and shuts the door. Theres this one episode where Brian invites Quagmire to dinner and Quagmire tells him why he hates him. Quagmire interrupted Peter's eulogy, by commenting on how David Ortiz kept swinging at curveballs. Well first thing first Quagmire already hates Brian, Brian try to befriend Quagmire but it make thing worst instead and so Brian hates him too, then … Also, what about Quagmire?

Brian made a cheesy speech about how he was sorry he sold him a crappy hotel but he only did it because he wanted to do something nice for a friend even if that nice thing was kind of "empty".

Brian didn't start to hate Quagmire until "Quagmire's Dad", when Brian slept with Ida Davis (Quagmire's transwoman father), not knowing who she was. Quagmire teased Brian by putting images in his head of his son, Dylan, getting hurt, causing Brian to worry and behave irrationally. After while when it shut down and Quagmire burn dead cats in a pile he took his anger and frustration out on a grumpy Brian Griffin for for being banned as a dog in any area of Quahog.

I just overlook it.Because it's what the writers of the cartoon wanted to have happen because they thought it would generate more laughs.What do you think of the answers? Brian sat at the bar and drank beer with Quagmire and the rest of the Beer Bar Buddies.