I saw this film from 1955 the other day, The Dam Busters and there was a labrador in the movie. I don't remember what was the dambusters dog called. I can only recall that it was ridiculous for a dog's name.
The dambusters dog was called Nigger initially but in 1999 some tv channel had it changed
The Dam Busters movie was shot in 1955 when it was ok to name a dog Nigger. I read some articles recently that the dambusters dog was renamed Digger ot Trigger and the studios double it. So hilarious
There is a real good article about the dog and the movie on Wikipedia. It says that the last few years The Dam Busters movie was broadcasted on television uncut and only one channel warned the audience that the film contains racial terms from the period.