Buck

Buck is a self-centered, action-loving horse, who serves as the tertiary tritagonist of Disney's 2004 film Home on the Range. He has a mind of an action horse with martial art skills. He then reforms at the end and helps the cows after he discovers that Rico, his idol, is secretly working for Alameda Slim. He is voiced by Cuba Gooding, Jr..

Personality
Buck is Sheriff Sam Brown's impetuous horse who is always hungry for action and adventure in the town. He is best friends with Rusty the sheriff dog, and they both seem to enjoy playing tick-tack-toe together. Buck has a tendency to act immaturely at times, but he can be very helpful when he wants to. Being a stallion, Buck usually has a mind of his own.

Home on the Range
Buck is first seen with his owner Sheriff Sam Brown hammering a wanted poster of Alameda Slim. Later, Sam rides on Buck to give Pearl Gesner a bank notice, explaining that the banks are going to auction off her home if she can't pay the full amount she owes them, because they are losing so much money due to cattle rustlers leaving behind so many bankrupt ranchers. When Mrs. Calloway asks if he's proud of reporting this horrid news, Buck arrogantly answers, "Yes." When Sam suggests to Pearl to sell off a few of her animals to pay the debt, she chases him off her property in a fury, sending him and Buck running.

Buck is later seen having a daydream of fighting bandits. Buck uses his reins to knock the guns out of the bandits' hands, then defeats them all with his martial art skills. After gloating by making a few victory poses, Buck is woken up from his daydream by Rusty's voice. Rusty then reminds Buck that it's his move at tick-tack-toe, which they were seen playing together. Buck becomes distraught, knowing that he will never get a chance to fight bandits, but Rusty tries to reassure him that there are other things he can do besides be a hero.

Buck is suddenly distracted by Rico, a supposed bounty hunter and the horse's idol, whom Buck claims to be one of the best. When Rico tells Sam that he needs a fresh horse to help him capture outlaw Alameda Slim, Buck shows off in front of them and Rusty. Rico eventually selects Buck, much to the horse's delight, and then saddles him up. Buck exclaims happily that he's wearing Rico's saddle, and the two ride off together. At a cattle drive, Buck encounters the farm cows who had the same idea, and gets into a brief argument before they leave him to wallow in his self-pity when Rico chooses another horse to assist him on his "mission," as he claimed Buck to be too "skittish."

Buck later decides to travel to Echo Mine alone and capture Alameda Slim himself. Upon arriving at Echo Mine, Buck comes across Junior the Buffalo who refuses to let the horse pass, and says that the only critters that get by him are cows. Maggie, Mrs. Calloway and Grace then show up along with Lucky Jack (a jackrabbit who helped the cows reach Echo Mine), and Junior lets them all pass. When Buck questions Junior about this, the buffalo states, "They're cows," and when Buck brings up the rabbit, Junior replies, "Well, obviously, he was with the cows." Buck tries convincing Junior that he was with the cows too, but to no avail.

Sometime later, Buck manages to trick the same horse from before into leaving his post so he could get back with Rico. However, when Buck gloats, he is overheard by Junior who snorts angrily, as he had been right behind him. Junior is later seen chasing Buck around Echo Mine until he is saddled up by Rico, to which Buck happily gallops off with him. Eventually, the chase ends when all groups collide with the train.

When Slim reveals that Rico, is actually a mercenary working for him all along, Buck is left feeling betrayed and heartbroken. Seeing the cows being forced in the train by Slim's goons, he turns on his traitorous rider by flailing about wildly and manages to buck Rico off his saddle. When Rico attempts to shoot Buck afterwards, Mrs. Calloway and Maggie manage to take out the fake bounty hunter. Buck then switches sides by accompanying the cows.

Later, the cows hijack a train to get home, but it gets in the path of another oncoming train. When the switch that reverses the train track breaks, Buck, thinking fast, wedges Lucky Jack's wooden peg leg in the switch's opening and pushes him down like a lever, thereby saving the cows from a possible collision, causing the driver of the oncoming train to yell, "Roadhogs!" Lucky Jack tries to pull his wooden peg leg out of the lever while he and Buck wish the cows good luck, and the two eventually arrive at Little Patch of Heaven after Slim is arrested when his disguise is removed, shocking Sheriff Sam Brown and Pearl that the auctioneer who is buying the farm is Alameda Slim.

Buck is last seen dancing with all the farm animals as they celebrate Pearl's farm being saved and re-opened.

Trivia

 * Buck is very similar to Chance in that they are both impetuous and act immaturely.
 * When Buck says, "Got milk?" to the cows, his dialogue is based on various TV commercials featuring the humorous tagline: "Got milk?"
 * While Buck is a Chestnut horse in the film in set in the old west, Buck could be a Quarter horse. Even Quarter horses are built for great speed, which is what Buck has in him.