With this cartoon, I noticed that Terry was moving towards a different cast with a new starring character: a small, frenetic, black-and-white dog set in an "Indians against the wagon train" plot. Formerly, Terry had used mice as heroes and cats as villains. Although he would return to this with the Mighty Mouse series, for the moment, he was trying something new.
Not there was much else that was new in this cartoon. Terry typically added at most one new thing in a cartoon. It would often require a couple of years to make a substantial difference, and even then the plots remained the same and the gags would be recycled. Here, the Indian gags are composed as if all Indians are the same, with totem poles, Comanche headgear and teepees with swastikas on them -- swastikas still meant Southwestern Indians in the US; Rudyard Kipling would remove them from his books in the same year as he noticed their prevalence in Nazi Germany,