The mouse is in the Maid's room of the castle (first floor left side). You can capture him with cheese you find in the dungeon.
You will need to use the gold coin from the fountain to enter the Mordred Museum and get the Library Slip from the books there. In the castle library (first floor right side), click on the shelf marked McM to enter the dungeon.
To get the owl to follow you. The owl will eat it then help you.
Get the cheese from the castle dungeon and feed the mouse. Later, when you have opened the underground lab, feed the mouse to the robot owl Merlin, so that he will follow you.
you put it in the room with the mouse in the astro knights castle and the mouse will eat it
go to the princesses maid's room and use it you will get the robot mouse
When you enter the underground lab, he flies out. Follow him and set down the mechanical mouse. He will eat it (chomp) and then follow you. You can use the owl to retrieve the fuel rod, by clicking on him and then on the rod.
You get the chese for a mouse in the left room in the destroyed castle in astro knights in poptropica
You do not get or use a bucket on Astro Knights Island.
In the Maid's room (castle first floor left), feed the cheese to the robot mouse.
Use the cheese from the dungeon (under the library in the castle). (*To get to the dungeon, see the related question.)
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.
the dung
use the laser
On Astro Knights Island, the small key opens the locked hatch beneath the bales of hay on the farm near the mill. Push them apart to use the key, and you can enter Mordred's secret underground laboratory. (Use the mechanical mouse to lure the robot owl back into the lab.)
say im a bunny