I learned something new about the yellow Vipers. You don't really need a big guard dog to protect them...
See, vicious dog! Look how she destroyed that corn!! Your tires are next EZ!
And it is because people respect Yellow so they don't mess with it. No one respects the red ones so you have to keep the bulldog around, people confuse them with those Honda's. Little do they know if they stole a red one they could not sell it for even a quarter of what a 80's Civic costs.