Horrible news Daisy. I am pretty sure it was a raccoon that invaded your pond, that is their standard MO.
Really sorry about your foot, I have been dealing with 7 stress fractures and a broken toe in the same foot for years. I injured my foot the morning my FIL died and I did not want to draw attention to myself and tell anyone I hurt the foot, as a result everything healed crooked. Physical therapy helps when it acts up.
Ursula, are you sure you are not sending those squirrels to my yard? I think their numbers are multiplying here.