when an owl pops out near rumor mill
It is in astro knight island. There is a secret in the libary in the castle that helps you.
release the mouse and he will eat it and you`ll get a new friend
Click on his card in your items bag.
feed it to the robot owl
At Mordred's secret lab, when the owl flies out, you feed the mouse to the mechanical owl. The owl becomes your friend and follows you.
Click on the owl in Mordred's secret hideout. He should fly outside. Climb out. If you click on the owl, you should say "He's not interested in me". This is when you release the mouse. The owl will eat the mouse and follow you.
Click on the "bag" icon (your items) and chhose the card with the mouse. If you release it near the owl, it will be eaten (chomp). Thereafter the owl will follow you in the underground passages (but not in the castle).
The mouse will get surprised, run around, then run back to you.
It is a mechanical mouse. (see related question)
release it to the owl. then the owl will follow you
You scare the owl outside. follow it and release the mouse. it will know follow you
Feed it the mechanical mouse (from the Maid's room) and the owl will follow you.