You cant. You have to let it out by the owl near morters cave.
You get the chese for a mouse in the left room in the destroyed castle in astro knights in poptropica
you put it in the room with the mouse in the astro knights castle and the mouse will eat it
You scare the owl outside. follow it and release the mouse. it will know follow you
Find the old cheese. . Give the cheese to the mouse and give the mouse to the owl.
Below the owl you should have captured.
the mouse is in the princesses room in the hole in her wall but you have to get the cheese to get him/her.
release it to the owl. then the owl will follow you
you just jump to the next one when you get near it!
I have no clue I was trying to figure that out to. Astro Nights was one of the only islands I have not beat. But I think you use the robot mouse or owl.
you should've gotten the robotic mouse, give it to the robotic owl and go on from there.
give him the robot mouse from the cell
feed it to the robot owl