Probably a transformer w/corroded casing near the ground. Maybe even a hole in it. I’ve seen rusted out crap like that around.
I hope those responsible get their butts sued off them.
“corroded casing near the ground.”
Dog urine is notoriously bad on metal and causes severe and premature corrosion. Paint provides protection, but it can be damaged and chip off exposing the galvanized (zinc) layer which then corrodes and leaves the carbon steel exposed. Thus the steel is susceptible to the accelerants of corrosion.
So it’s possible and maybe ironic that dog urine caused the electrical failure. Just a guess here.