[Wraith]

Zoo Tycoon DS is ok.....
If you want a war at your house,
I vaguely remember yousaying you have sons?
Well, You can't save more than 1 zoo in that game.

And Get animal Crossing:Wild World.
It is soooo much better than pets and it also much! MUCH! Friendlier to kids.
(Like you cant see them......how should I put this.........Go into the bedroom shut the door..........)
That sort of stuff isnt on animal crossing!
Stick with animal crossing