What's that little kids show with the blue mouse called?

There's a litttle kids show that I used to love and I remember there
was a blue mouse in it. And I think there was some kind of monster or
bear or something that was best friends with a blue mouse. My nephew
is 4 years old and I want him to watch that show because I want him to
enjoy it as much as I did. I think it;s called blue house or something
like that.