turn on water

Hi,
He was electrocuted to death when he turned on the/some water.

Is the above natural? Yes. 'To death' is often omitted.
Clive

Clive'To death' is often omitted

How about

I accidentally electrocuted my dog when I tinkered with the iPod around him.

Did my dog die?

Hi,

I'd guess not, since I don't think an ipod can killl a dog. If I wanted to know, I'd ask an additional question about the matter.

'Electrocute' does tend to sound serious, if not fatal. A common phrase for more minor cases is 'It gave my dog an electric shock'.

Clive

Cliveminor cases is 'It gave my dog an electric shock'.

Got it. Just one more quick question, How about "I accidentally shocked my dog"?

Hi,
Not so idiomatic.
Might sound like your pants fell down.
Clive

My dog would be excited thinking he's getting a treat

I know I'm going to regret asking this, but why does your dog think he's getting a treat when your pants fall down?

He loves hotdogs ...wieners?