Is lassie a male or a female?

If you are referring to what gender Lassie was portrayed as on the show, Lassie was a female dog. However, the dogs that were used to play the character were actually male. This is because male collies have a thicker summer coat and producers thought the coat would air better on the television screen. Also, male dogs tend to be bigger then females, so the child who played Timmy would be able to work with the dog for a longer period of time before outgrowing him.