Burglar Mouse
From MHWiki
"These mice have earned the nickname 'Sparky' after a certain infamous MouseHunter who had very long fingers.
With an insatiable lust for brie, this stealthy mouse makes his way from region to region stealing brie from shoppe keepers! Known for their desire to hoard cheese, a hunter is sure to find a few pieces of left over brie in the satchel of this sparky little mouse."
The Burglar Mouse is a breed of mice found in various locations. They are worth at least 1,250 Gold and considered very difficult to catch.