Gumbo

How Big is Gumbo?
"He's massive! He's about 13 stone. You could probably put a small child on him and let them ride [him] like a pony. He's got a very good temperament, too. He never barks or anything. Obviously he's a dog, though, and so trying to get him to do what you want him to do is difficult. If he wants to go for a walk, you have to go with him. You don't get much choice in the matter."