Last week my son (Evan) and our ducks were in the backyard digging for worms. Evan was digging with the shovel and when he went to dig, Wallace(our drake, he's more like a dog that follows you everywhere!) got excited and went to close to the shovel. Evan knicked Wallace's outer foot with the shovel. He had a very small cut that we washed up right away. Now Wallace has a bump where the cut was. I have been putting peroxide on it. Any idea why the bump and what else to do? He does not slow down one bit and he's Evan's best friend. They are inseparable. Thanks in advance.