Molly Moo-Cow is an odd character on which to base your cartoon. She's not cartoony enough looking or anthropomorphic like Clarabelle Cow from Disney. Instead, she is stuck on four legs and is orange. Why is she orange? Because at this point, only Disney Studios had access to true color--Three-Strip Technicolor. They'd signed an exclusive contract and other cartoon studios wishing to make color films were forced to use more antiquated film stock--such as Cinecolor or Two-Color Technicolor-- both of which tended to make everything look orangish and greenish.
The film begins with settlers in a covered wagon heading west--with Molly and two ducks in tow. However, the ducks leave and soon Molly goes to look for them. They've decided to hang out with the local Indian tribe. When a baby falls into the river, Molly springs into action and saves the child. How with the mother thank them? See the cartoon.
Overall, this is reasonably well animated and pleasant--but without many laughs. Not a bad cartoon but one that shows us the limitations of a character like Molly Moo-Cow.