Wellard (/wɛˈlɑːrd/) is a Belgian Tervuren dog from the BBC soap opera EastEnders. His character first appeared in the series on 18 October 1994, and became EastEnders' longest-serving pet, before being killed off on 15 August 2008. Although the character is male, he has been played primarily by three female dogs: Zenna, her daughter Chancer, and her granddaughter Kyte. A fourth dog briefly served as a replacement for Zenna in 1996, when she was given time off from the show to have a litter of puppies.

Wellard was briefly written out of the series under executive producer Matthew Robinson, but returned when Robinson was succeeded by John Yorke. Wellard's owners for the majority of his duration in the soap were Robbie Jackson and Gus Smith. He was voted "Best Pet" at the 2008 Digital Spy Soap Awards, and named the UK's favourite soap opera pet in a 2009 Inside Soap poll. Wellard was a fan favourite, and although a storyline that saw him threatened with euthanasia for biting local café owner Ian Beale was poorly received by critics, his death drew generally favourable reviews.

Wellard's name is a portmanteau of "well hard", meaning "very tough". The character was originally played by a Belgian Shepherd (Tervuren) named Zenna, who was cast at the age of one. Producers had envisioned Wellard as a "rough, tough mongrel", and Zenna's owner, dog-handler Gill Raddings, explained: "She had the look they wanted and the ability to do what was needed on command." EastEnders' producers were initially unaware that Zenna was female, and had to find a canine double to serve as temporary replacement in 1996 when it transpired that she was pregnant, going on to deliver 10 puppies. Zenna was retired in 1998, as she was "losing her looks".

Zenna was replaced in the soap by her daughter Chancer, who was in turn succeeded by her own daughter, Kyte. Kyte played Wellard for seven years, longer than Zenna and Chancer. The dog, whose pedigree name is Minka Independance Kyte, came to the soap from Raddings' company Stunt Dogs, along with another EastEnders dog, Terence. She had previous experience in the television and film industry, having appeared on A Touch of Frost, The Jonny Vaughan Show, 102 Dalmatians and Gladiator. Raddings revealed that Kyte came to understand the words "action" and "cut", meaning the director would sometimes have to give an alternate cue such as "go" during scenes featuring Wellard, as the dog would become instantly alert upon hearing the usual commands, which appeared incongruous in scenes which called for Wellard to be relaxed. Kyte worked closely with Mohammed George, who played Wellard's owner Gus. George was afraid of dogs as a child, but after working with Kyte for three years, commented that they were so close he "sometimes [felt] like [her] dad."

Wellard was briefly written out of the show under executive producer Matthew Robinson, but returned in 2000, when Robinson was succeeded by John Yorke. A show insider commented: "Wellard just disappeared. It seemed odd because Robbie loved that dog and never noticed it had gone." An EastEnders spokesman stated of his return: "John Yorke believes Wellard should be an integral part of Robbie's character."

When a 2005 storyline saw Wellard threatened with euthanasia for biting local café owner Ian Beale (Adam Woodyatt), James Desborough of The People suggested that EastEnders producers were hoping to emulate the success of a storyline from rival soap opera Coronation Street, which saw fans protest the arrest of character Deirdre Rachid (Anne Kirkbride), going as far as to lobby the UK Parliament for her release. Desborough deemed the storyline "bizarre" and accused the BBC of being "desperate to boost flagging ratings". An EastEnders spokesman responded that it was simply "a funny story which we hope the nation will get behind."

In June 2008, it was reported that Wellard was to be killed off. A show insider explained: "Wellard has been a much-loved character and everyone will be sad to see him go. But if you think about it, Wellard was not a puppy when he arrived on Albert Square, so he would be over 100 in dog years by now. It makes sense for him to bow out of the show gracefully." Raddings commented: "I used to take Kyte on set everyday but I found the scenes when Wellard was put down too hard to watch so I asked someone else to take her to filming." At the time of his death, Wellard had been in EastEnders for 14 years, making him one of the show's longest-running characters, and its longest-serving pet.

In October 1994, Walford resident Robbie Jackson (Dean Gaffney) takes in a dog he assumes to be a stray, naming him Wellard. The dog's owner, Mr Hammond, locates him and demands him back, but Wellard later returns to Albert Square of his own accord. Robbie realises he has been mistreated and has run away. Mr Hammond admits to neglecting Wellard, and allows Robbie to keep him. Wellard fathers puppies with Grant Mitchell (Ross Kemp) and Nigel Bates's (Paul Bradley) greyhound, Frieda; however, the puppies are stillborn. When Robbie begins a relationship with a woman allergic to dogs, she gives him the ultimatum of choosing between her and Wellard: Robbie chooses Wellard. Several years later, when Robbie is due to leave Walford to live in India, Wellard is run over, delaying Robbie's departure. He is cared for by Robbie's sister Sonia (Natalie Cassidy), who gives him to her friend Gus (Mohammed George) after Robbie's departure. When Gus is involved in a minibus crash, Wellard is able to save his owner by leading him to a spot from where he can call the emergency services.