The movie shares an inspiring message, as the animals not only help him on the journey, but also through his grief and reluctancy. The overall message that comes from this is that Dolittle found his abilities to heal were best when he shared them with others; the movie makes this message clear, and it is delivered through a series of events in the plot.
The movie was also successful in other areas, such as graphics, plot, characterization, and scenery.
I do believe, however, that it was not as successful in casting for the role of Dolittle. Robert Downey Jr. was too soft-spoken and difficult to understand; his voice and disposition as an actor did not fit the eccentric character of Dolittle well.
Despite a stumble in the area of casting and acting, this movie overall takes viewers on a whimsical journey through a magical land and teaches the importance of helping and sharing with others and helping yourself.