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Let me explain something. This is my park, and these are my rules. You look at my girlfriend again, and you're dead. You come near her, you're dead. You talk to her, and you're...(Thunder and Lightning: Dead!!) He ain't nothing, watch. Come on, you wanna go? You wanna go? (Marmaduke: No! No! No, no, no.) Didn't think so. Welcome to the O.C., mutt.
~ Bosco intimidates Marmaduke.

Bosco: You gotta be kidding me. You're kidding me, right? Does everyone here have rabies-induced insanity? This is sacred turf. It's just for pedigrees.
Marmaduke: Well, not anymore.
Bosco: You know what? You're all just mutts. All of you! Let's go, Jezebel.
Jezebel: I think everyone should sit here, too.
Thunder: I'm done taking your spit on my head, Bosco.
Lightning: Go find somebody else to drool on.
Bosco: Fine, have it your way, losers. I'll remember this. Payback's gonna be a... [A bee lands on his nose] Bee! Bee! HAAAAA!!!!
~ Bosco's defeat.

Bosco is the main antagonist of the 2010 family comedy film Marmaduke. He is an aggressive beauceron and the tyrannical Alpha of the Orange County Dog Park in California, as well as the leader of a dog gang consisting solely of pedigrees until the day when Marmaduke, a great dane from Kansas, arrived and upset his tyrannical reign. He is Marmaduke's arch-rival and Thunder and Lightning's boss.

He was voiced by Kiefer Sutherland, who also played David in Lost Boys, The Caller in Phone Booth, Freddie Lee Cobb in A Time To Kill, Bob Wolverton in Freeway, John "Ace" Merrill in Stand By Me, Jonathan Kendrick in A Few Good Men, and Senator Quintas Corvus in Pompeii.


He gets that way because he's a jerk.
~ Maisie about Bosco's condescension.

Because of being a pedigree, of which he is absurdly proud, Bosco believes himself superior to all dogs who he considered mutts, showing them only contempt and virtually no respect. Like the Alpha, he declares openly that he is the one who makes the law in the park. He also treats his two minions, Thunder & Lightning, badly. 

He especially has a strong taste for bullying, as he scares Marmaduke when he meets him. Bosco is also very arrogant, cruel, perfidious, manipulative, and particularly contemptuous. He is also very angry and jealous, as when he learned that Marmaduke was interested by Jezebel, he warned him that if he continued, he was dead and when he lost the surf contest, Bosco becomes so upset that he chases savagely Marmaduke.

Despite everything, Bosco turns out to be a coward when Marmaduke finally stands up to him and makes him so afraid that he simulates a cramp on his leg. After being ousted from his Alpha rank, Bosco's fear was replaced by an even greater hatred than before against the Kansas's dog. He fully recovers his former trust when he exposes Marmaduke for lying about the cat that he had supposedly driven out of the park. During his last meeting with Marmaduke in the film, Bosco was no longer afraid of the Great Dane and asked him if he wanted to fight.

He shares Marmaduke's fear of bees, running away for fear in a comical manner when one landed on his snout at the end of the movie.


After Marmaduke arrives at the dog park, he meets a trio of pariahs named Maisie, Raisin and Giuseppe who make him visit the park by explaining to him how things work until he arrives at the rock of the pedigrees. Maisie then warns Marmaduke about Bosco that she describes as the park's toughest dog. She then warned the great dane not to approach Jezebel, the girlfriend of Bosco but the black dog arrives behind them, accompanied by his two minions and said sarcastically hello by calling them losers. He asks Maisie if she to a new friend mutt then drool over Thunder to whom he says to shut up it when he complains before asking the name of the newcomer. The presentation made, he warned Marmaduke that if he continues to to be interested by Jezebel in any way, he is dead. He then intimidates him by pretending to want to attack what scares the Kansas dog but amuses the beauceron who welcomes him to California and then goes away calling him a mutt. Back to the rocks with Jezebel next to him, Bosco watches Marmaduke flee because of a bee and calls it "gargantuan spaz".

At night, the pedigrees organize a small party under the yacht club. The mutts go there even though they are not invited and Marmaduke accidentally talks to Jezebel, which annoys Bosco to the point where he barks loudly to keep everyone silent. The vicious beauceron treats circus beasts before saying he thought that with those big ears, Marmaduke would have understood that he had ordered him not to approach his girlfriend. Bosco then belittles him when he explains that a pedigree is a dog that has a gift of his own, as he himself champions surfing then he asks the great dane if he is good at something before ordering him to sit down and lie down in front of the other dogs who makes fun of him. Bosco then tells him that his big size does not impress him and that in his eyes he is only a frightened puppy. Marmaduke gets up, pushing Bosco to growl at him because he did not give him permission to get up until Jezebel calms him down. Marmaduke and his friends leave just before Bosco tells him that there will not always be a girl to protect him.

Two days later, Marmaduke goes to the park with a plan to gain respect for the pedigrees. The great dane stands out shouting that he smells like a cat, to which Bosco replies that there is no cat in the park until Carlos, the cat who lives with Marmaduke falls of a tree. Marmaduke pretends to chase the cat which is worth the admiration of other dogs except for Bosco who is not impressed.

Bosco then participates in the surf competition organized by Bark Organics. In the last round, he finds himself facing Marmaduke he has fun to taunt because he believes that the victory is worn. When a huge wave arrives Marmaduke so scared that he does not control his board and hit Bosco who falls into the water while Marmaduke managed despite himself to ride the wave. Before the announcement of the winner, Bosco is exasperated that the great dane is robbing him of his wave and when it is announced that Marmaduke is the winner, he gets angry and screams that he will shred it and then chases it. He manages to pin Marmaduke and promises him that he will make him pay but Marmaduke encouraged by the other dogs finally finds the courage to challenge Bosco, stands on his hind legs and pushes a powerful bark that is so scared to Bosco that he simulates a cramp.

Having not only lost the surfing competition but also being a coward against Marmaduke, Bosco lost his dignity, his Alpha title and his place among the pedigrees. Seeing Marmaduke sitting next to Jezebel in the place that was once his, Bosco becomes even more bitter.

Marmaduke organizes a party with his masters on a boat for the evening and for whatever reason, Bosco goes there. As soon as he comes in, he notices Carlos and asks him if he has seen them before, the cat tries to deny, but he accidentally dreams about the trickery. Understanding that Marmaduke lied that day, Bosco breaks the stereo to catch the attention of everyone and he tells them that Marmaduke lied to them about the cat's attack and although Marmaduke tries to deny his turn, Bosco shows the photo of Marmaduke and Carlos, completely deconstructing the great dane which is immediately abandoned by all the world. Before leaving, Bosco taunts Marmaduke by telling him that pedigrees are always victorious and mutts like him are nothing.

After that, Bosco recovered his title of Alpha as well as his place of chief of the pedigrees. One day, Bosco is visited by Marmaduke, the beauceron asks him if he came for a revenge but to his surprise, Marmaduke came to thank him. Astonished, he asks him what he's thankful for and the great dane tells him that it was thanks to him that he understood his mistakes and then made a discord to all the dogs in the park so that everyone could be equal by sharing the rock of pedigrees. Bosco refuses this new utopia and tries to bring back the pedigrees to reason (or rather his own) but while he remains inflexible, Bosco treat them of mutts then tells Jezebel that they are leaving but she chose the ideology from Marmaduke, even Thunder and Lightning leave him because they are tired of the bad treatment. Now alone and without friend, Bosco promises that he will get his revenge one day until a bee lands on his muzzle, spanking him and screaming in fear.


Maisie: Dog Vader over there is the man himself, Bosco. Alpha male who runs the park. He's the toughestdog around.
Marmaduke: Him? He doesn't look that tough.
Maisie: His girlfriend over there is Miss Perfect, Jezebel. And he's super-jealous, so stay away from her or he'll turn you into...
Bosco: Dog food. Hello, losers.
Maisie: Speak of the devil.
~ Bosco's introduction.
Bosco: So, I see you got a new mutt friend. [Drooling on Thunder]
Thunder: Okay, that's wet.
Bosco: Shut up, Thunder. What's his name?
Marmaduke: Uh... Marmaduke.
Thunder: Mama-what?
Bosco: Well, well. My little fireplug said you were salivating on my girlfriend.
~ The meeting between Bosco and Marmaduke.
Bosco: Well, well, well. If it isn't the dog and pony show. Did the circus give you guys the day off?
Maisie: We're just leaving Bosco, back off.
Bosco: Whoa, whoa, whoa! What's the hurry? You just got here. You know, it's funny, with ears like that I would have thought you heard me tell you to stay away from my girlfriend.
Lightning: He told him.
Thunder: You told him, like, 12 times...
Bosco: Zip it!
Thunder: Zipped.
Bosco: Being a pedigree means you're exceptional. We're all bred for a purpose and have gifts you could never dream of having. Stuart's an expert tracker. Shasta is a master sled dog. Ferdinand is fluent in six languages, including gopher. And I'm the reigning SoCal surf champ. Are you good at anything? Huh? Um... Uh... Sit! [Marmaduke sits] You are good at something! Lay down. Lay down! That's it.
~ Bosco intimidates Marmaduke again after explaining to him what it means to be a pedigree.
Bosco: I don't care how freakishly large you are, Donkey Boy. We all know that inside you're just a scared little PUP! [Marmaduke comes out of fright] Did I say you could get up?
Marmaduke: I don't wanna fight you.
Jezebel: Bosco, stop!
Bosco: Relax, baby! We're just horsing around.
Jezebel: No, you're not. You're being a bully. I'm sorry, he gets this way when he drinks too much drain-pipe water.
Maisie: He gets that way because he's a jerk.
You watch yourself, tomboy. See you later, when there's not any girls around to save you. Mutt.
~ Bosco about to attack Marmaduke until Jezebel stops him.
Bosco: I'm gonna tear you apart, mutt. [Chases Marmaduke]
Marmaduke: I didn't do anything!
Bosco: Get back here, mutt! Get back here, you poser!
Marmaduke: I don't even like surfing!
Bosco: Stop running, you coward. I'm gonna make you pay. I am gonna make you pay! This ends right here, right now.
Marmaduke: You know what? You're right, Bosco. This does end here. [Marmaduke stands on his feet and grunts aggressively]
Bosco: Ow! My leg's cramping! Ow! Ow! Time out, time out!
~ Bosco tries to take revenge on Marmaduke after losing the surfing competition but humiliates himself when Marmaduke finally stands against him.
<Bosco: Do I know you from somewhere?
Carlos: Me? Nope. Never seen you before.
Bosco: You sure? That tail looks painful.
Carlos: Of course I'm sure, man. I've never even been to a dog park. Oops.)
~ Bosco discovers that Marmaduke lied to everyone.
Bosco:Looks like a great party. Now, I'm sorry to interrupt.
Marmaduke: What are you doing here?
Bosco: I got a quick question. Anyone recognize this cute little fella? The cat from the park that Marmaduke hazed? Look at the tail. Turns out he lives here with Marmaduke. Or is it Marma-fake?
Marmaduke: First of all, you weren't invited here, Bosco. Leave now and you won't have a problem. And take Whiskers with you. We have a "no cat" policy.
Bosco: Is that right? Then how do you explain that picture over there? [The dogs are leaving] You see, in the end, pedigrees always win. And that's the way it'll always be. Enjoy the rest of your party, mutt. [Address to Jezebel] Baby, come on. Jezebel! He's a liar. Come on, let's go.
~ Bosco takes revenge on Marmaduke by exposing his lies to other dogs.
Bosco: What's up, Marmadukey? You here to exact revenge?
Marmaduke: Actually, no, Bosco. I'm here to thank you.
Bosco: Thank me? For what?
Marmaduke: For showing me how wrong I was.)
~ Bosco is thanked by Marmaduke for allowing him to understand his mistakes despite himself.



Bosco and Jezebel

Bosco loved Jezebel, though his desire to protect her exceeded the limits.
In the end, Jezebel parted with him and chooses Marmaduke. However, when Marmaduke's lie is revealed, the bitch feels hurt, and returns to Bosco.
At the end of the movie doesn't go with Bosco, when he wanted it and officially ends their relationship.

At first, Jezebel loved him too and didn't see anything bad with his behavior.
When she finally noticed it, she left him.


Thunder was treated badly by Bosco, even though he was his minion.
The Beauceron spit the pinscher forever, which clearly annoyed Thunder.
At the end of the movie, Thunder and Lightning turn away from Bosco.


The situation with Lightning looks the same as with Thunder; at the beginning he is a devoted minion for Bosco, but at the end he turns away from him.



  • Bosco may be of Hawaiian origin, or at least Oceanian, since the hook necklace he wears is widespread among surfers there.
  • Bosco's behavior can be explained by inconsistent upbringing by his owner, lack of discipline in upbringing and training, or by the owner disregarding the problem.
  • Jeremy Piven was considered to voice Bosco.


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