Dumpy's True Nature
After Dumpy learnt how to talk, life became a lot easier for Leo who could now properly communicate with his frog and listen to what Dumpy really thought about him.
To his absolute delight, Dumpy seemed like a genuinely well mannered and obedient boy who never talked back to Leo or disobeyed him.
Infact, he always referred to Leo as 'Lord Father' and had a reverent tone when addressing him.
All this was a delight for Leo who thoroughly enjoyed the respect, however, unfortunately, Dumpy's behavior was not the same around others.
It was only when Leo took Dumpy out of the manor and mixed him with other NPCs that his true nature as a Swamp Frog came out, as it was only then that Leo realized why the Beast Taming manual put absolute emphasis on making the pet respect it's master, as Dumpy's behavior towards anyone he did not respect was absolutely deplorable.