I was at Target with my 5 year old nephew and we kept checking the NERF stuff out. We were there to pick up some more powerful squirt guns for campground fun. I'm thinking the N-Strike Vulcan or the Stampede would have his cat running scared.
The Nerf website has an N-Strike Training game. Looks like I'm putting off studying for a bit.
My son got one of these for his birthday. Found out that it won't shoot anything but the basic ammo. No whistlers, no suction cups. However, you may now buy tacticool gear for your NERF wars.