How many Dalmatians were used in the filming of the movie 101 Dalmatians?

When the dogs are seen running from A to B, lying down, sitting up, getting into a dog bed, barking, or looking in different directions, all of their behaviors were cued by their trainers using verbal and hand commands. For every dog or puppy actor, there were at least two doubles to enable them to be switched out for rest and exercise, keeping the animals from becoming fatigued.