We have exactly what the game developer wants - let's squeeze him for information.
Give him the hard-earned cable, and you'll be told the answer to the unicorn's riddle - '115'.
You can return to The Bull and finally beat the unicorn's riddle at the end of the game.
See the quickhints if you still need help getting past the doors.
First safe door: ? Second safe door: ? Third safe door: ? Fourth safe door: ?
When you get there, make sure to select the correct answer - '115'.
Door 4 (IV)
Door 3 (III)
Door 1 (I)
We did it! The bull should be less distracted now - you should probably remind him that the 'other guy' has woken up.
(If he's still asleep, follow these hints.)
It took a lot of work, but the Bull's gone to dig that hole for us.
You can find it by going to the far left of the pine woods (accessible via the green woods.)
Next up - the lure.