I find this very funny i did some tackles from behind with my goalie and I actually once tackled the other teams goalie with my goalie and he didn't get a card.....i find this very unrealistic...why is this? And one more thing, is it possible to injure someone with ur goalie?

Impossible..... for a gk to get near the other one it would have to have possesion of the ball. If it loses possesion then the goalie runs back to his own goal and u can't control him anymore. He can't tackle another player.

Actually the keeper can lunge for the ball and hit a player but that happens automatically... and no the keeper can't get a card.