[Pontiac]

The process involved training the dogs on a flight simulator which used coloured signals to indicate which direction the dog should fly; blue to turn left, red to turn right and white to continue straight ahead.

I thought dogs were color blind.

[Larry Lucido]

That’s what they want you to think.

[null and void]

Apparently not. Although I thought they were red-green colorblind and could distinguish blue and yellow.