Last year someone let their dog roam free in the neighborhood
and this is what the dog did to my pond.
 

The plants in it is trampled and ripped
up, and he ate all of the fish. He also trampled and broke the lights
around the pond as well
as the expensive lights by the fountian. 
 
My midget pond wasn't spared either,
although one fancy goldfish escaped the dog.
 
 
I called the police and animal control and
got nothing done with this dog.
He visited my pond on 4 different times over the winter.