Ouch!!! That second one of Dan S.' smarted! Try this one...

Three Huskies were sitting by the side of Lake Washington holding fishing
poles with the lines in the water. A Game Warden came up behind them, tapped
them on the shoulder and said, "Excuse me, but I'd like to see your fishing
licenses."
"We don't have any." replied the first Husky.
"Well, if your going to fish, you need fishing licenses," said the Game Warden.
"But officer," replied the second Husky, "we aren't fishing. We all have
magnets at the end of our lines and we're collecting debris off the bottom of
the river."
The Game Warden lifted up all the lines and, sure enough, there were
horseshoe magnets tied on the end of each line. "Well, I know of no law against that,"
said the Game Warden, "take all the debris you want." And with that, the
Game Warden left.
As soon as the Game Warden was out of sight, the three Husky started braying
hysterically.
"What a dumb Fish Cop," Buster said to the other two; "doesn't he know there
are steelhead in this lake?!"