Spoiler alert!
Brian, the Griffin family's quick-witted dog on Family Guy, died during the "Life of Brian" episode. As a series regular since the animated show premiered in 1999, Brian's 12-season stint on Family Guy ended Sunday when a car hit and killed him.
His owners — Peter, Lois, Meg, Chris, and Stewie — cried as a blood-soaked Brian took his final breath. Stewie can't reverse the death because he destroyed the time machine he created. The family adopts a new dog, Vinny, to cope with the loss.
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"You've given me a wonderful life — I love you all," Brian tells the Griffins before dying.

The show's Facebook page remembered the anthropomorphized dog with this post:
Post by Family Guy.
There's no word on whether Brian will appear in future episodes in flashback scenes, but executive producer Steve Callaghan told E! Online that the death is for the betterment of the series and helps demonstrate a harsh reality of pet ownership.
"We thought it could be a fun way to shake things up," he said. "It seemed more in the realm of a reality that a dog would get hit by a car. As much as we love Brian, and as much as everyone loves their pets, we felt it would be more traumatic to lose one of the kids, rather than the family pet."
A Change.org petition is even asking Family Guy creator Seth McFarlane to resurrect Brian. The petition, which went live Monday, already had 1,500 signatures at time of writing.
Meanwhile, outraged fans on Twitter have rallied around hashtag #BringBrianBack:
A cartoon has pissed me off and made me cry as a 30 year old. So long #FamilyGuy im done. No brian, no viewer's here. #BringBackBrian
— Nikki Lynn (@nikkilynn4) November 25, 2013
Nobody wants Vinny. Nobody wants to give him a chance so just don't waste any time and #BringBackBrian #familyguy
— RampantSexPanther (@Greg_Copley) November 25, 2013
Lol remember what Stewie did to the last dog that replaced Brian? #BringBackBrian #RememberNewBrian pic.twitter.com/Jv3LMORjnx
— Steph ⛵️ (@stephanierevans) November 25, 2013
Does anyone think that @SethMacFarlane has the time to read the #BringBackBrian tweets? C'mon, he is constantly working. I doubt he cares.
— Lucia (@LuvLuchia) November 25, 2013
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Image: Fox Broadcasting Network