Most of the talking animals in the series have usually been summoned creatures. I can accept them talking due to their presumed mystical nature, but there is no precedent for non-summoned animals talking at all. I mean look at Tsunande's pig it just grunts and squeals. Which is honestly why I hate the stupid talking ostrich since it goes against the lore already established in the nartoverse unless it is some kind of mystical ninja ostrich